I drew this colored pencil piece on an 8x10" Blick Studio Wood Panel with a 7/8" thickness. I like the smooth surface of the wood and it does not have to be sanded or primed to accept colored pencil. I selected three shells with different shapes and colors and decided how to arrange them on the surface. It took a little bit of figuring how I wanted them to look compositionally.
First I drew the outlines with lead pencil and added some of the details to help me when adding color. I used Caran d'Ache Luminance and Prismacolor colored pencils to create this piece. The wood is soft so a softer pencil works really well on the surface. I was also able to build up layers easily.
My drawing kind of evolved, I intertwined the shells and later put in a soft background suggesting sand and sky.
The fixative/varnish is a three-part process. First I spray the drawing with Krylon UV Resistant Clear, two coats letting the first dry for 15 minutes. Secondly I spray the drawing with two coats of Krylon Kamar Varnish letting each dry for about 30 minutes in between. You may stop here and perhaps spray one more coat. I like a glossier finish so I add a third step. that is to apply Golden Polymer Varnish with UVLS. I mix one part varnish with two parts of water to thin the varnish so it can be easily brushed on with a soft bristle brush. I work in one direction when brushing on varnish and let it sit for about two hours until completely dry before adding another layer. The layers are thin and I keep adding additional layers until I like the shine. This drawing probably has about 8 layers of the polymer varnish.