I have so far made one big level (if you aren't counting the "Half done" one).
If you want to check out my half done map (the map im asking you to continue on) on moddb here is a link:
http://www.moddb.com/mods/childhood-insanity-chapter-2
There are some images there but if your interested I can get your more.
Here is my first "big" project:
http://www.moddb.com/mods/oscar1007
It has about 7k downloads.
If you want to know something more or are interested send me a private message or comment on this thread.
Thanks.