I lost almost 12 stone and 18 months later the skin on my stomach is back to as normal as I could expect it to be. Yes it's not perfect, but I'm not 18 any more!
I do a lot of running and swimming now to keep my weight off and I'm sure that is why my skin isn't too freaky any more. After my initial weight loss it was a bit wierd looking but I quite liked it! And it's much better having excess skin than excess pounds! There has to come a time when you're happy with your body and if you stick to the plan, you will be-sooner than you think!