Trying head studies with watercolor

This is new for me - I’m trying loosen up, stop before overworking, and explore color.  These are my first efforts at quick studies with watercolor. I gave myself a fairly short timeframe (15 min) to work with a hard-to-control medium. LOA gave me all profiles this time.

I’d appreciate feedback - hope I linked them correctly. They’re in my sketchbook 
Thanks

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Great work. I like the light touch. The color choices are beautiful.

I can see you're tackling a very difficult challenge. I wish you the best of luck.

These are beautiful. So effective while very simplistic at the same time. I immediately recognized those profiles. My only critique would be the hair on the 1st portrait is blue and black which I do enjoy but I think if you added a little more green into the blue then the cool olive colored skin tone would mesh better.