I like to start a watercolor with a light grid to keep my parallel lines parallel. I start with a pencil sketch and then go on to pen and ink.
Pen & Ink La Almudena Cathedral
I tape down all of my watercolors to get the white edge of the paper. Don’t think you need anything expensive. I use carpenter’s tape, but it’s only there for a couple of hours. I wouldn’t leave it there for more than a day.
A small watercolor taped down to the drawing board.
This is the white edge I’m talking about. When the tape is taken off, you have a white border.
Small Watercolor of Almudena Cathedral June 24th 2018
Click Here is a really shortvideoof the painting site.