Honestly, this map pack is pretty good for you first pack. You even got the slopes right!
Though, there are some things I would like to point out.
First, the openness of the levels. It's super open. There are many empty open areas, so you just run 75% of the map pack.
This isn't a criticism, but custom gamedata is kinda essential to map packs.
Also, the levels are too small, not that it matters anyway.
Still, I think it's a good pack with potential in the future!
Welcome to releases!