I think that it's great design for a magazine advertisement.
You brushed pretty much perfectly.
But here are the things that I think could be changed, but it's only my opinion:
-The green hands. I also feel that they don't "flow" with the color scheme going on.
-Some of the splatter brushing is a tad dirty. Meaning there are small splats that could be cleaned up a little on certain areas, like the top area of the twirl brushing. Right in the middle there are two | like lines that I think could go.
-The font for the website link doesn't exactly flow with the other font's used, so maybe use a different one that isn't hard to read either.
Other than that, I think it's great.
Best,
-AC