I have been using Adobe Photoshop for quite some time now, and I never stop learning. If we were at a party, you would find me in the corner, yapping about Layer Masks and compositing along with lighting and other Photoshop jargon. Would I be by myself? Possibly.
One of my favorite things to do is go to Unsplash.com and grab a few of their pictures and mix composite them together. They have some wonderful photographers and artwork on the site.
So enjoy and scroll down to your hearts content! (To see the full picture, click on a picture)