Hi Kay.

When it comes to wearing skirts, shoes do become more important.

Try rounded toe shoes rather than pointy as pointy can make your feet look longer.

You can also try styles of shoes that will "cut up your feet". I don't mean this literally, but strappy styles with detail that will cut up the expanse of your foot might work to make them look smaller.

Another way of looking at it, is to come to terms with your feet. You probably notice them alot more than others do.