This is a nice first level! I think you should make the full zone, the idea of a castle in the mountains is pretty cool!
Though there are some things you could improve.
First, the cramping of the level. It's kinda of a small area, and it could be a little better if it was bigger.
Second, when you complete the level, the game crashes. I'm not sure if it's my computer or in the SOC. (Did you add the NextLevel block? You can make the level TITLE to return to the title screen.)
The lack of it in the level select is kinda disappointing, as you can easily use the "LevelSelect = 1" block in the SOC.
Still, I know this map has potential, and I hope to see more of this in the future!
Also I wasn't aware that I could've just put "LevelSelect = 1" lmao