Welcome @bradbradbrad, the closest thing to a single repository is the website I maintain, which is verticalarcade.com – it’s still missing a lot of the more recent overlays here, I hope to get it up to date soon.
Hey @jackowacko, thanks for your contributions! I think your stuff looks nice, a couple of things I would suggest would be the same things we learned as we continued developing these over time, among which are to consider darkening the bezels and control panels somewhat to simulate a darker arcade (the screen and marquee should ideally be the brightest things you see, but our own work varies and there is no “right” amount of brightness), and to continue to evolve your techniques for simulating backlit marquees.
@ArsInvictus has some great marquee techniques, but even things like adding a highly feathered/blurred white oval over the marquee art and setting it to Overlay at a relatively low opacity, and then making the art pretty dark underneath, can help you get a more lit effect without resorting to adding blur/glow to the art (so it’s pretty sharp, but still looks backlit). What you have is not bad, some are already pretty close I would say. Your control panels look great!
Thanks for the advice @Thoggo. Really appreciate the feedback. Like this tail gunner for example, is this dark enough? Or do I need to add more dark or shadow effects?
To my eyes, that’s fine – some people like them very dark, others don’t. Often I will have multiple variants within MAME using a translucent black PNG overlay, so you can choose how dark you want it, but that’s not essential.
Great to see you tackling a lot of older (late 70s/early 80s) games! @Briball has done a number of those as well, I gravitate more toward the mid-late 80s/early 90s myself (and I own 5 games from that era) so I’m glad you’re covering areas we haven’t done as much.
Hi @jackowacko, wow you on a roll, nice work and I think thoggo covered most of the overall lighting idea, but it’s also what you like, but I like that you want to also get yours to match up some. My tip would be to use the exposure layer to add dark or light. Also I have only looked on my phone so hard to really tell. But if you find good CPO images they might need more work to get the resolution and camera angle right for a good overlay, but see it as a start, then find the highest possible flat versions of CPO or bezel to replace the photo version. You’ll have to play with transforms and stuff to get it right, but that extra resolution does make a big impact. Then just get some buttons and joysticks that are already at the right angle and edit them in place.
I can see you are doing most of this, but maybe something here might help you or others. Always pm me if you want more info.
Keep it up, good to see new stuff again, getting my itch so hope to add soon myself.
I’ll take note. Thanks @Briball. Really love to hear great tips from the pros. I’m still learning as I go. I’ll try doing flat versions of cpo next time.
Thanks @Thoggo. When do you think you might get back into doing Horizontal overlays?
Keep up the good work!
I restored the cpo manually since I can’t find an adequate source. But I’ll play around with the overlay effects a bit more to finalize this.
Hey there and welcome! I’m really liking your contributions! 
Since you asked for feedback one thing I would mention is to keep an eye on where the game screen is vertically in the graphic/monitor.
What I’ve noticed is that it seems best when the screen stays closer to the center of the graphic vertically, because after you put it on a 40" + screen it can force you to look higher on the monitor to focus on the game screen which might not be as comfortable.
But of course it’s up to you and the way you like to play, and what feels right to you when it’s up on the big screen. 
Thanks @HyperspaceMadness. Appreciate the feedback. Yeah, you’re right about calibrating it for a more comfortable view. That’s one challenge that I’m still trying to master too. Adjusting on how I want most of the artwork to be covered in the screen is still tough for me. When I found out about this vertical thing, it gave me an opportunity to get back to the game. I’m a fan of Orions Angel’s works too and I thought that was it. Vertical artwork was really the one I’ve been looking for. I love how the marquees, bezels and CPO gets finally captured in the whole screen. Honestly, I’m still in the learning stage. The bits I post here are merely temporary versions. I keep updating my artworks from time to time. I’ll make a final release when time comes.
Hey gang! I have been searching all over for some overlays that make good use of the screen real estate. Most either seem to have large gameplay screens, but I’m just not a fan of their bezels. Or as in the case here, the bezels are amazing, but the screens seem pretty small. I tried to take what you all have done and simply tell Mame to “zoom to screen area”, but in the case of the vertical games in particular, it cuts off the beautiful marquees. Plus, nothing quite looks as good as those that are custom-made. Here’s a few examples of some I have tinkered with.
Vertical
Horizontal
My question is, are there some out there already like this? I’d hate to duplicate my efforts if so. Otherwise, I may continue on this route for myself, but if y’all like them, I’d be happy to add to the collection here.
That’s a fair question @bradbradbrad – our approach has typically been a balance between screen size and artwork representation, especially for larger screens (if you have a 40+" vertical screen, you don’t necessarily need the game screen to fill the maximum amount of space, though it’s obviously a matter of taste). For smaller screens, the game screens can get a little small in some cases, sometimes smaller than actual size of the original games. Some of our overlays (especially mine) include larger screen sizes to help address this issue, though I wouldn’t say it’s the majority, it generally comes down to the interests/approach of the creator.
There are various options out there for vertical and horizontal screens (more horizontal than vertical) that are more about filling in the extra space around a large game screen than faithfully reproducing the look of the actual cabinet, but they may or may not be exactly what you’re looking for. Our focus in this thread has been exclusively for vertical screens, and predominately doing our best to recreate the cabinet look faithfully (I like to say it’s about verisimilitude more than accuracy).
If you want to create a line of overlays that split the difference between cabinet accuracy and screen size, you can certainly do that, and I’m sure the community would appreciate your efforts – I would suggest starting a new thread as you can then mix and match vertical and horizontal as you wish. We’d definitely like to see what you come up with!
ARCH RIVALS (1989) (Bally, Midway)
https://drive.google.com/file/d/1tc9t9OM9kfqh5GPYLdQYaI9l6_TP6HnE/view?usp=sharing
@jackowacko , Berzerk marquee looks bury? Now I look at the others they too look bury, Is this a filter or something or up-scaling? and cabinet overall looks bit too dark if you compare to all the other releases.