Sorry for this, but the best way to improve for you, from that level to a better level
to smash the most rude comment right in your face
it's disgusting, horrible, awfull and squary as hell...
AVOID squares, noone likes them... try to use more the doodad palette, because in the beginning you can get the most details from that
to continue.. use RAW palette, try to get used to it and then at the end, you'll be happy you're using it
so sorry that i said it was horrible, but try to improve
make maybe a thread on the mapping showoff, lots of people will be happy enough to help and improve you
thats all