I’m not good at English, I’m using translator to help me:
Thank you for your advice. I think you’re right, I will tweak it a bit more.
And yes, I do plan on adding other systems.
I’m currently working on making all Game Boy videos to build an archieve using shaders and overlays, and I have made some overlays of GB.
Here is my channel, I don’t know if you can open it: https://space.bilibili.com/2773332?spm_id_from=333.1007.0.0
I have been learning PS lately, I hope I can do better in the future. There still is a big space for me to improve. I will share my works when I can create better ones. 
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And I learned a lot from all of you on this forum, thank you very much!
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Can you please tell me exactly which shader (and shader parameters, if any) that you used for the LCD??? It looks so realistic. I would really like for mine to have the same shade of green and glow as yours.