Not bad for your first at all. Yes, it is a bit stiff, and the lines aren't as fluid as those of an experienced vectorer, but it's got potential. I actually rather like the lines; the only real thing I dislike is the shading. The highlights on the cloth are too bright for the material.
Also, the outlines of the leaves are clunky and pixelated, and the color doesn't fill up the lines either. I also feel the leaves only emphasize how empty the background is.
Nonetheless, a fine first effort. I'd love to see what you make in the future.