Hullo! I've been using Illustrator for work, but in a very limited, utilitarian way. I don't know that much about it and have been learning little bits and pieces on the go.
I chose this image becuase it's simple, but also includes some organic lines and shapes.
My first draft of the ad (below). Pretty happy with how the lines on the woman's outfit are coming along, even though they're not perfect. I used the paintbrush tool to piece together each line, converted the lines to shapes, and then manipulated the points to make the shapes more accurate. I haven't tried to justify the left edges of all of the lines to form the smooth curve or her back yet, so I hope that's not too difficult...