Embroidered Collage

These cards started out as the quick landscapes I created with watercolor crayon a couple weeks ago.  I wanted to use the 4"x4" squares from the rough exercise as a basis for art cards.  The shading and subtleties in the color were created by going over the already established image with paint from my pan watercolors.  I love how a little touch of pigment here or there can spread and increase the complexity and interest of the image. 

I wonder what else I can do with pushing the pigment around...  Also, what are the ways that the different methods of applying watercolor pigment will interact with each other?  These cards only used two - pans and crayons.  Is tube paint different?  Watercolor pencils produce a finer line, of course, but will the way the color looks after it has been wetted be different?

  As a side note, I tried a different technique on two of the eight landscapes and it just didn't work for me.  I decided to enhance with colored pencil by applying layers of circles, which should also have blended one area into another a bit.  I just wasn't impressed, even though I've seen such circles used to good effect before.  I don't think the overall texture implied.  The picture shows the cards after I tried applying pan watercolors on top of the circles, but they still didn't appeal to me and hit the trash can after being scanned.