Go ahead.
Alright
If it's ok I will use pictures of your build and compare them to mine here.
If not tell me and I take them away.
First up lets have a look at the normal straight corridors:

The one on the left is yours and the one on the right is mine.
First thing we notice is the height, now yes I said that height is irrelevant but I have to correct myself here, please make it tall.
There are situations where you might want to have a less taller part like if you're aiming for something else (can't think of an example here) but this just doesn't look like it should be this small in heigth.
So it's too short.
Second thing is that it's kind of bland for a jungle theme you were aiming for, now before you go shouting at me I know it's WIP but still...
It needs more colors, can't say that mine has much colors either but that dull gray is just boring and bland and agh this should be somewhat jungle-like right?
Ok so it's too bland.
The rest of the parts are just about same except for this one:

Alright some jungle thing going on here!
If you are going for a jungle theme thing every part should have some jungle in it, not only this one!
Also see that left wall, thats something different from the dull 1 color gray walls, it has another shade of gray!
So what you should do is
1. Make the parts taller
2. More of the jungle stuff you are aiming for
3. More colors
4. stuff
Then come back and I'll have a look at them again and we will see if its any better
I hope that cleared it up a bit.
Also room parts should be bigger than corridor parts see:

Left one is a corridor and the right one is a room part.
Demian has been cooking up some hot parts and it seems that the basic ones are pretty much done (correct me if im wrong demian)
So once those are ready I will add them in game.
Once in game the generator will pick a overall part style (example. the ones i made) for the tomb and go with those parts for the rest of the tomb.
Once that tomb has been finished it will pick another overall part style (example. the ones demian made) for the new tomb and go with those.
These parts can have variations inside them like, an different inside style for deepness levels and such (like going deeper means that the walls get all golden or something)