It's important as an illustrator to visually communicate very clearly. I provide my clients with a clear vision of the project from sketch to final. Below are some examples of my process. Since I work between several different styles, it's always a great starting point when a client references a piece from my portfolio and we can go from there. Along with sketches I also usually create a styleboard for my clients as a visual reference.
Finals are shown to the right of each sketch.