This is lovely and the painterly effect is just right. It is just a bit too small to work as a wallpaper, however. Might I suggest that you repeat the image, perhaps in different sizes and rotated several different ways... to make up a collage that is more "wallpaper size"? I think it would make a stricking assembly.
Very creative use of the paint effect. It gives the stem a watery feel to it. The angle you shot this from is unique and not something most people look at.