I personally like the flowers, those are really well done. No horrible black outlines, good use and light and dark shading areas, giving it some good contrast, and the overall shape, giving it a nice organic feeling, really well done on that part.
The main GUI part, it looks a bit bland, maybe something interesting on it, such as plant weeds/reeds coming over the top, and down one side. But remeber not to add to much, so it doesnt look over crowded.
I also like the little icons, those are also well made for such small images.
Overall, i really like it. Well done
