A background matte created using several photos and painted layers in Photoshop - click the video below to see it being built

Another matte created using several photos and blending layers in Photoshop - click the video below to see

Landscape matte, created in Photoshop

I combined video of my daughter dressed as an old woman, photos, and painted layers into this scene, with added effects in After Effects

-video below-

Futuristic, highly stylized matte of a future city - I created a camera move for it in the video below

A city matte with the illusion of camera movement, created by moving layers in After Effects