Am I treating my burn right?

I think I have a second degree burn. It’s pretty big, my leg bumped the exhaust pipe of a motorcycle while hot. It’s brown, wrinkly, and I have a blister full of puss and it keeps popping..keeps forming a new one. It’s been about 2–3 days now…it doesn’t hurt really.

I put neosporin on it and keep it wrapped up in a bandage. What else should I do? Also, how can I prevent it from scarring?