Focus on Trees

I've been trying out different methods of sketching trees.

Ink then watercolor...

Ink, watercolor, and then more ink until I realized I was overworking it, so stopped...

Watercolor first...

Pencil followed by ink and markers and colored pencils...

Watercolor, ink, then more watercolor with flat brushes...

 Watercolor, ink, water soluble ink, more watercolor, and then a background of markers for the windows...

Whichever method I use, I seem to have most fun when I try to keep it quick and loose.