Is it normal if i want to get my foot out of the door?

I totally feel like I got my "foot in the door" of the industry I want to eventually work in too soon. I probably sound crazy but nothing can beat what I'm feeling right now. You can call it intimidation, no preparation or both. I would have liked to come in already prepared but I honestly didn't think I would get the offer of this internship or if I did, I thought it would've been different. But now I have it and I wish I can quit but wouldn't that just look REAL bad? especially that its in the industry so its like a small school and everyone knows each other so I'm afraid the word will spread about me being a quitter and will affect me in the long run. I know its an internship so you're supposed to learn but at the same time, you're supposed to contribute as well and I would love to offer something but I don't have the talent yet so I'm just doing the tasks they want me to do and haven't brought anything to the table yet. So so far I'm staying but I'm struggling. I'm inexperienced, I look like a moron already so basically I can either have a reputation of being a moron or of the girl who couldn't go through it and just gave up. Not sure which ones less bad. It's still early in the game and I can still leave but like I said, is that just worse than struggling through it? I mean I'm hoping I'll get better and better but I'm a really slow learner so I'm just being realistic, I'll probably end up a little better than where I am right now but not to the point where they will put in a good word for me.