I don't normally make religious pictures, but my church recently asked me to design the cover art for the Sunday service bulletin and I agreed.
I drew the line art and then opened in MS Paint (a poor man's Photoshop) to add greyscale shades, since it's going to be reproduced in B&W. I found to my chagrin that I can't get acetate screen tones anywhere except to import them.
Anyways, it obviously the annuciation. I threw in the Bethlehem Star because I thought it would look nice.