I like the basic idea and bold colors Would move the center left and slightly down Would fit better in frame and get rid of the hot spot on the lower left Light was a bit harsh and could have used a diffuser ( I'm a big fan of diffusers)
Al's comment on using diffusers in the field is valid. I carry them with me whenever I think I might be shooting close-ups. Moving left and down would strengthen the image's composition. I like the plane of focus.