The icon looks blurry and faint.
First of all, i suggest u to zoom it in. A lot of space in the icon is unused, just faded bg.
Then, define those leaves better, using more vivid colors, shading and highlights.
Atm all the colors, shading and details are faint, giving a overall boring appearance.
The bg doesn't help those leaves to stand out.
It'd be preferable to create a contrast between those leaves(foreground) and the bg.
The foreground is made to stand out from the bg by use of contrast, focus, etc. Usually, the foreground colors are more varied and sharper than the bg ones.
So, i suggest u to either darken the background or lighten the background and darken the leaves.