Ah, thanks for the criticism.
Negative space? As in making the whole thing black and white to see the contrasting values? I completely forgot to do that actually. I'll have to try that next time since i know how important it actually is.
Interesting how the style is painterly, yet i consider myself pretty bad at traditional paints besides watercolor. Though then again, maybe i can apply what i learned about color mixing/blending to that as well.
And yes, i actually did paint this by using only observation instead of using the eye dropper. I felt like i would learn more if I did it that way. Also i see what you mean on the uneven mouth of the vase, i probably could have erased up to the highlight and it would be fixed. And yeah, i should fix the cast shadow. In fact, i should probably reflect my understanding of cast shadows in general.
Also thanks for telling me your approach to how you color your characters. It's probably going to help my attempts at doing so. Just a few questions though. For the characters and the backgrounds, do you usually use a brush to color in the flat colors and to shade? Or do you use something else or a different tool for each?
And how did you get that glowing effect on those red eyes? Also, out of curiosity, what do you mean that the characters get lost in the background? Like, do they not stand out?