okay i'm still not finished with my terrarium yet! (still making it sturdy, waterproof and i'm also gonna give it some coloring)
BUT i'm really glad with how it looks at the moment so i'm gonna share it anyways... (I'm posting a bit of the proces)
First steps in making the terrarium.

Painted & started to try some things with the background

Wasn't happy with the background i made, so i redid it.

When i finally was happy with how the platforms etc. looked i started to make a rocky background between de platforms.

There is no substrate at the moment but when it's finished i'm going to put in substrate that is getting deeper from front to back..That way the skink will have some space to dig in and enough space to walk..
on the lower left you can see a platform which (when i have some substrate for at the bottum) will become a cave, which he/she can dig bigger itself.
In the middle you can see a big platform with a rocky side, which is like a really really big cave (the thing is hollow so it is roomier then it looks) There i will put a bowl with water for him/her to lay in.
On the right side there wil be a basking spot and also you can see 2 more caves.
I know skinks are ground animals but like i said the substrate will make everything that looks high lower...not sure how to explain it better in english xD