I'll second the round face shape but have no more idea what to do with your hair than my own. Just let it grow and see what happens? It might start going curly and offend you, then you'll know you need to keep cutting it :crazy:
I believe you have round. I would grow out your hair a bit and leave it textured on the top. I think it will flatter you to have a bit more length. Have you checked out medium hair styles on the web? When you are ready to get some shape to your hair and have it finally cut, I recommend going to a salon, rather than a barber. A beautician will be more apt to recommend a flattering style for your face type. Then you can maintain it on your own from there and go back to your regular barber if necessary.