1) Temple, not cave :P
2) I can see one BIG huge **** up,. by lowest door. If your going to make maps, you've got to be able to get those mistakes fixed. Nobody likes shoddy maps.
Id suggest, work on small, maps, and work way up to bigger, as the bigger they are, the more likely you will fk up, and to fix it, you've got to edit 25% of it. Trust me, that isnt fun.