double portrait

I would really like to find out how to use watercolour, so I have started playing with it  and have begun adding a watercolour portrait in with the oils I've been doing... this morning's portraits, a 20 x 16 oil, 60 minutes, and an A3 watercolour, 50 minutes.

and  a couple of life studies from this week, some 2 minute graphite sketches and a 20 minute  A2 Conte