Diy 3D Background - How Should I Carve It?

[cooledwhip]

I made a 3d background for my 2.5 gallon tank. Currently it is about 2 inches thick and is already siliconed up-ready for carving.
 
I don't really have ideas about how I should carve it. I want a cool pattern - I was thinking of either a smooth cavern type look or a really rough look like Seiryu stones.
This is my first 3d background.
 
Make a sketch of something  you think would look cool!
 

 

[Munroco]

Something like this?

 

[cooledwhip]

How do I block people?
 
XDD HAHA LOL DUDE JK 

 

[StevenF]

You might want to go to google and a locaiton or name of a cliff and the do an image search.  That might give you some ideas.  Here are a couple of examples:
https/www.google.com/search?q=zion+slot+canyon&espv=2&biw=1024&bih=653&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjo2euc9IDNAhVWz2MKHXvIABUQsAQIKA
 
https/www.google.com/search?q=grand+canyon+slot+cliff&espv=2&biw=1024&bih=653&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjR1uym94DNAhVVO1IKHZ4sDOcQ_AUIBigB

 

[cooledwhip]

I already carved it. idc if it looks bad. Ill upload pics later.