first off, nice map; I like it.
I'm not entirely a fan of the randomness to the dungeon layout; that stylistic difference aside (if you and your players enjoy it, all the power to you) I really like the style you have worked out. I like the texture of the floor tiles and the contrast it has with the walls. That said I'm not a huge fan of the font you've used.
also, I'm dying to know what room b4 is all about.
These minor criticisms aside, I think you have a really nice mapping style going and am curious to see more from you.