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In contrast to the smears and coffee rings on the table surfaces, the seat cushions look too clean  in my opinion.
It also makes them look rather samey.
EDit: *blush* re-read your post, yeah, I see now your planning to change that. All right then.

Thank you very much. 
Alas, texturing, as mentioned, is a dark and mystical art to me as rigging, if not more so.
I made this little scene using a lander I made for our intrepid adventurer, and the ground is a heightmap of some craters I found online  extruded in terranim8or.

I made this little spaceman over the last couple days and most of it went fairly quickly, at least for me. I might tweak the fingers to they are more cartoony proportions and make the the booties more detailed, but otherwise I like how it turned out. It's a mix of box modeling with some wirework, especially for the legs. I don't know if there is an officially term for wireing together shapes to other shapes and then adding surfaces, but I did a bit of that too, as I find it's a nice way to add detail. The chest plate mostly.
For once, I like how it looks both subdivided and normal.
All colouring is with materials, texturing is dark voodoo to me still.

Personally, I'd make the eyes more oval, right now they basically look like cylinders with domes on top.
It's a small thing, but it really stands out to me.

Maybe a bump map might help give some of the striations seen in the image attached to the original post. Other than that, my lack of experience leaves me with few suggestions.

The forelock of pinkie pies mane in subdivision mode looks more like an extruded 'tongue' rather than an extension  of the main body of her hair in my opinion. Otherwise really good, just shows me how far I have to go.

Translating a 2D image into a 3D shape always has issues, but this is quite impressively organic looking, even without subdivision.

I am no programmer, so how implementable this is, is way beyond me.
But what if, as variation of the Insert tool in face editing, instead of  adding a smaller copy of the face inside, you insert a smaller polygon, with a menu for how many faces you want the inserted polygon to have.