One style I quite like in Watercolour is a loose quick style .....I've done several sketches and paintings in this type of style recently and had some very positive feedback about it. I don't do a pre pencil sketch or outline I just load my brush with the chosen paint and basically draw with the brush, then add drops of stronger colour whilst the first wash is wet. When that dries I then add some detail.
Here I have done a watercolour of William in that technique
He is quite a difficult subject as his coat is very complicated, but I kept going and the final touch was to add a few strips of white gouche which the photo doesn't show up the same as in reality, but take my word for it. I was quite pleased with the result, although I think his nose dips a bit too much, never mind I'll no doubt be doing lots of paintings of him, but for now I'm quite pleased with this one......by the way his expression at the time was "I'm listening to you but I'm not going to look at you" - anyone who has a dog will know that one!