I don't know what are you shooting with author but you clould work a little bit with the background & lighting.They are not flatering your subject (imho always).You have some "hot spots" & some "nasty" shadows that doesn't add to the photo.Try to light your subject with a "softer" light source (use a sheet in frond of your light source to diffuse it)The background it's ok (a solid colour surface) but the folds aren't good.Try to use a piece of paper or something.Over all it has alot of potentials to become better(imho again).Hope i helped with this tips (as an amature i try many things my self)

@ karaflazz... thank. very very gentle

I think you just used too much flash.