My Forza 4 screenshots on Forza.net

How do I delete old pics I uploaded from Forza 4 to make room for new ones? When I tried to upload some the other day, I got a message saying; get rid of the one to open up a slot. But how do I do that? Sorry, this is all new to me.

Go to your SF. Select photo tab. Select photos you want ro delete. Once you clock on it, there will be an option to delete it.