Airbrush sketch-warm up...

This is me trying to warm up before starting an airbrushed photo-real portrait. Basically, not really trying to paint anything specific, or of any high quality. I very seldom use my airbrushes anymore, so I feel the need to warm-up a little when I do. This is nothing special, and I know some of you have made comments about my doing the same old thing over and over. But this is not an attempt to do anything original or extravagant. I thought some out there might enjoy my sketching-- this is for