Here is a video CG Society released a couple of months back for my 8 week online class. If you want to spend 8 weeks learning about environments make sure you sign up. Check it out at http://workshops.cgsociety.org/courses.php There is a new class running early Nov so check it out.
A few really quick paintings. The shapes took a while but all the other paintings are around 30ish mins. Might finish them up one day!!