Freshwater Build Threads.. Any Good Ones Out There?

[Nick James]

I have seen a lot of really cool planted tanks that look like above water landscapes. I am wondering if there are any step by step guides or build threads that show or detail how they get certain mountainous looking aquascapes?

Here are a few I really like...

 

[Nick James]

 

[Nick James]

 

[Nick James]

I guess what I am most interested in knowing is, how do you keep the substrate sloping how you want it?

 

[Nick James]

I found this video to be very informative as to how they aquascape these awesome tanks..