I've checked the little changes you've made and i don't dislike them at all 

I can't remember why i didn't keep those red'ish pixels of the guitar symmetrical, but with my own OCD i'm sure i tried it haha

And your edit on the fretboard was actually cool, i could have done that two-pixel spacing at least for the top four frets!

Thanks for the tips, mate, it was really insightful! Cheers 

D'oh, I thought the hole should be lower, nevermind...

But, my OCD forced me to try: https://i.imgur.com/P3G4XDH.gif

Anyway yours is better. I like everything: the palette, the concept, the composition. 6/6. It's a shame they're no more likes and comments. Kudos.

Thanks, karakenio! The only reference was my own guitar haha What would you have done differently?  

This is really great. Love the amp. Did you have a reference for the guitar? (I would edit a couple of things)