Yeah, you're edges look far to sharp and defined. Your image doesn't really look like jelly to me, I'm afraid. Just having a look through images of jelly on Google and you'll see what I mean. That's not to say that you don't get sharp edges on jelly, you do, but..well, it's easier to see. I'd even suggest actually buying some jelly from the supermarket (it's not expensive) and making it so you can see first hand.