Working on the pastelmat with watercolours is very different to watercolour paper. This velvety touch paper is a little like blotting paper. Soft edges rather than hard edges seem to form.
With the paper dry I started with the sky making a few adjustments, getting a few colours down but not thinking about finishing this area. I like to start on the background first. It's a personal thing. Cool colours first and not too much details, gaining in momentum as we move forward richer tones, a little more detail and I'm finding my way through the scene.
If you fancy painting landscapes in Pastels why not try my Pastel online course. This wonderful medium is easy for anyone, you just need a selection of soft pastels and the right pastel paper.