Now you are ready for fabric selection. When I choose a fabric, I usually take out around 30 different fabrics from my stash for each section of the quilt to see which fabrics will look best. For instance, when I am choosing the fabric for the sky, I look through my stash and take out anything I think will look good for sky and clouds. Think beyond the box when you do this. You will be surprised how the different fabrics react with eachother. I often use the back of a fabric as well.
Once I have my background fabrics, I start by adding all the dark sections. I use Heat and Bond Lite to adhere my quilt pieces. Using your light box, you can trace from the clear vinyl onto the back of the Heat and Bond. Don't take too long because you don't want your Heat and Bond to melt. Also make sure you have your tracing on the right side. This can get tricky. Iron your heat and bond onto your fabric. When it is cool, you can cut out your section and iron it onto your quilt.
Unfortunately I did not take more pictures of the quilt as I was building it. Here is the quilt before I squared it up. Once I am satisfied with the fabrics, I start painting with thread. I use the zig zag stitch to go over some edges. I will also enhance the darker sections with a dark thread and insert where I feel I need more defintion. Play around with different threads and different colors. Let yourself go. Don't be afraid to try new things. And Have Fun.