Most Helpful Girl
It doesn't seem like you did anything wrong, but maybe she felt that you came on too strongly. The secret is really that girls need to feel comfortable around you before they would consider being in any sort of relationship, whether it be platonic or more. Honestly, girls are more often than not are very picky and iffy when they meet new guys; just trying to feel them out. Coming out too strong will scare her away. Girls want to feel secure that the friendship is genuine, not looking to get into her pants. Girls want to see how assertive you can be without being too clingy. Make her miss you. Girls like a challenge just as much as guys do. And keep it light and fun. A relationship starts with a friendship first.
Most Helpful Guy
She might have thought that you're going too fast.
You should have asked her out alone for a coffee or a movie in a theater rather than at your house.
No worries dude, shit happens.
Wait for a week or two. Don't text her or contact her in any manner otherwise she would think that you're smothering her and will see you as clingy/desperate.
If she doesn't text after this time period, just send a random joke or a meme to her.
If she doesn't reply even after that then she's not the one for you, son.