Some feedback I'd like is technical suggestions. I know I have a 5th color available now, so what should I do with it? Also the kanji, would it look better more 'textbook-y' or rustic?
Honestly I don't think this is working it is really flat, I suggest you ad more things to make it more interesting, like some shadows and lights, you could start from there.
I agree with Pet. To add, the "stems" on the flowers are really heavy and distracting. You may want to thin them out, make multiple smaller streaks or just edges instead. I do like the idea though. And I do like sake.
Some feedback I'd like is technical suggestions. I know I have a 5th color available now, so what should I do with it? Also the kanji, would it look better more 'textbook-y' or rustic?
I don't know. Halp.