Sorry, but the layout is terrible.
The walking paths are way to small and also some of them are blocked off.
Also, why put wyrms ontop of water?
Alot of stuff that doesn't make any sense to me in these pics, but I think you have potential, you use some Raw Floor Borders atleast which is a very good start.
Atleast it seems you have put some effort into the details since there is quite alot of it at some places, altough, not entirely well placed on most places.
Try Making another cave.
If you want narrow passages, don't use to much details because it may interrupt the ingame gameplay if it's blocking the player
Think about realism when you map.
You could think: "Does this make any sense at all?"
Some other tips would be:
Don't mix to many ground types, small patches looks alot better than big patches of a ground type.
- Try to put dirt patches on sides of a cave and tiny dirt patches in the middle (only a few, not many patches)
If you want grass in a cave try to put it near water, like you have done in some places AND also, if you have wines clinging down a cave wall, you can put a VERY small grass patch there to make it look like it has grown downwards somehow ^.-
But anyhow, I think you should look around the forum alot, on every mapping show-off thread and take inspiration from others and look how people map.
Good Luck Mapping!
And yeeeh.. Hopefully this isn't to confusing xD
I'm pretty damn tired =DDD