So from Russells suggestion I have borrowed a bunch of books from COFA on watercolouring including 'Written in Water', Steven Holl. I intend on trying out this drawing technique to study precedents and convey ideas over the coming weeks. Tonight I did a few attempts to try to familiarise with the brushes and the paints.
Attempt 1 - Steven Holl Shapes
Attempt 2 - Steven Holl Shapes
Attempt 3 - Building name from work
Attempt 4 - Treehouse (from memory)