GUMMYDAGREAT's Novice Review

Hey there! :3

Firstly, terrain!
I love the cliff/spires in the middle. I really like the shape and the palette (especially how it gets darker at the bottom).
However, there is a lot of space on your plot that is pretty empty, or just filled with water. These are the areas where I would suggest having some lower terrain (The side of the plot opposite Steve)
On that terrain, I would add some more terrain details, or even another smaller structure.

Secondly, organics.
I love Steve.
Steve is bae.
Your tree looks good, however the branch sticking out the side needs better leaves. Remember you have w/e now, so you can use a brush to make your leaves. I highly suggest this, as it makes the leaves look 'fluffier' and more natural.
Example brush;
//br sphere 90%air,10%leaves 5
//mask air
This will improve your leaves a lot more! Remember you can make the brush size smaller if you want (1 - 5)
I would also //replace your logs so they're all 6 sided.
Lastly, the roots of a tree should be on the ground, or drooping over the side of the cliff, not raised like you have them!

Lastly, structure. I like the structure you have, but it is a bit too over detailed. There are too many stairs and slabs just placed down the side of the structure repeatedly, like it wasn't really thought too hard about. Be a bit more creative with your detailing. Instead of repeating the same thing all down the side, change it up a bit once in a while! :3
Another structure somewhere would be totally awesome too; maybe on the flatter terrain I suggested?

Good luck!
- Dutty :3