Depth has never been my forte. I don't really do a lot of landscapes and maybe that's part of the reason.
Diminishing detail isn't too hard to grasp, but colour isn't my strong suit. You do such a great job creating less colour contrast as the scene recedes further into the background. This is an awesome tutorial! I haven't painted in a while... maybe it's time I whip out some canvas again.
If you're interested, I would love it if you would create something to enter into my Surreal Art Contest. There's 20 SBD worth of prizes.