Nice choice of bg, works well with the shoes. The front view of the shoes are not all that eye catching. Did you try a side view, or one shoe side and the other front?
Back for a comment and a bump. i like your choice of set up and composition with the sea in the background, but the image seems to suffer from some significant chromatic abberation issues and overall the tone seems 'too blue' as if the cyan and blue saturation was tweaked too much.