Please no constructive crits on these actual pieces – they’re commissions and I have no motivation to change them. Instead, any and all ideas to help me improve (tutorials, books, anything) would be very much appreciated!
I wanna be a concept artist…. Stupid graphic design degree at a state uni. ^_^
I know you said you didnt want crits... but im gonna say them anyway
I think you could have made the beatles pic look a bit more like them, without the names included i don't think i would have gotten them all. Even with the anime style going on you could have still made ringo's nose a bit bigger, given lennon a pair of small round glasses etc.
Also, your backgrounds could use some work IMO. the first one, to me, is bringing down the rest of the piece which is otherwise really good.
As an answer to your question of generally how to get better, I guess I'll just mention the usual. Anatomy studies, colour studies, drawing from life, and practice, practice, practice!