I had no idea you wore a 10 (I do too). I always picture you as quite petite. Who knew?
Anyway I do not think they make your feet look big (and I know what you mean I've been hunting for the right oxfords because of the clown feet fear). They taper nicely at the toe. If you wore them with black leggings or tights like this it might be a bit too much contrast, but I think you have other plans? Will withhold final comment until fully styled or full body view is available.