The one on top looks like a hen. The bottom left looks like a roo to me based on the long feathers near the butt. I too was on BYC when I first got chickens just over a year ago but now after raising several birds of different breeds its pretty easy to spot a roo. I'm not always accurate but...
in your iPhone photo library just pick you picture hold your thumb down and click "copy" then while typing your thread simply hold down your thumb again and click "paste". This should place the photo in your thread. It's difficult to see your profile picture clearly enough to see much. Try to...