Self portraits

I'm struggling a bit with my urban sketching at the moment - I'm doing a very good online course about sketching buildings. I'm learning a lot. But what I'm gaining in accuracy, I'm losing in spontaneity. That's a normal stage in learning a new skill, but I'm finding it hard all the same. What I should do of course is practise more. But it seems I'm choosing avoidance instead!

Hence these two quick self-portraits in watercolour. Not brilliant, but at least I have the excuse that I have never done any portraiture training!