Didn't know you were still playing this game bro.
The track is a bit over scaled for my liking but it's actually pretty fun, everything flows really nicely and the jump faces are pretty well built. The only jump I got weird kicks on was this one:
The decal placement is pretty good, though there are some parts on the track where you can see the tilemap, but that's not to big a deal since the track isn't finished.
Also you should make the track flow straight across the start like this:
Good job for your first track, can't wait to see the final product.