step 1: create a quick thumbnail with color and value compostion worked out and some detail represented. Light is very important at this stage.
Step 2: Realize that the client is talking about the middle eastern religious type of pilgrim, not the thanksgiving type. Repeat step 1.
Step 3: After approval, continue to refine the color palette, starting with some photo elements if necessary.( note: the use of photos is sometimes a necessary compromise when working under tight deadlines. It can be thought of similarly to underwear: effective when used properly, but don't let anyone see it)
Steps 4-6: refine the things you can, kick out the fancy-dancy stuff you can't get to.
Step 7: exhale.