
Here is the painting part way in. I was careful to loose some of the edges into the white background space, bleeding them back with clear water so no hard edges were left. The colour was puddled in, at the correct values, thereby keeping things fresh and eliminating the need to wash over them again = the key to clear, clean colour! I have gone back with another watercolour pencil to define the centre left edge of the upper flower. Most of the watercolour pencil melts into the washes, so isn't a problem the way that graphite can be. This stage makes sure that you have some hard and soft edges.

In this step I have added more leaves at the bottom, and threaded one large leaf up the bare right side. I did this without drawing it first. I loaded up my brush with non-homogenized colours and let the brush make the form by twisting and turning it while drawing it up my paper. I did some scraping into it with a credit card, and drew into it while it was wet with a watercolour pencil.I dropped other colours into the bottom to suggest other flowers behind and relieve some of the green. I have gone in and separated some of the iris petals and to add some texture. Note that most of the original washes remain untouched. I also placed a bit more colour into the background at the top of the top iris to show more of its form.
There you have it! Some things done with a limited wet-on-wet method, and some negative painting. Both combine to provide interest, while the exciting purity of colour puddling lends the power.
Enjoy!