Aquascape help

[Wolf89]

What do you guys think of my aquascape? It's a 90G long, I've got a little more rock and I'm trying how to fit in an island or two, but I cant get the look I want. Any help on the aquascape or islands appreciated . Thanks

 

[Peach02]

Looks good a little unstable in some spots towards the right and if you want a island you could put one in the centre thats only a inch or two high.