This is very pretty. If I had to select a certain fabric design for a kimono, I'd probably pick this one. The colors compliment one another. It also has plenty of rhythm by spiraling towards the enter.
Nice. I love the way you draw the 'vines' It's just my opinion, but the rotations of the 'flowers' should vary more, so that your picture will have 'movement'. Maybe a pattern of rotation difference would be nice (for example, each flower is rotated 15 degree compared to the previous smaller one)