I don't get it (Please Help)

So i went to this girls house whom I've had a crush on for many years. So i went to her party to meet her parents and they knew I was coming an hour early for they could meet me with no distractions and they did. The party seemed really good and her parents and siblings were nice but the next day she told me that her parents thought I was too rude and snobby because I asked a friend of my to not through my jacket and her mom asked me what type of jacket it was and I said its a Couch. So they thought I was bragging about my wealth to her. We also went on a walk and she wouldn't talk to me so I talk to my friend minnie who is also a friend of hers but minnie is in love with me to the extreme. Even though it didn't end well for me at her house I did find out that they thought I was a pretty boy. I was really nervous about going to her house but i've ask to go back to her house to retry and make a better impression to her parents. But I just don't know what to do next.