My son-in-law Nick is a motorcycle guy. For his birthday we secretly took a picture of his helmet and then I recreated the pattern as best I could to make a motorcycle helmet cake.
I baked 2 cake mixes in a large roasting pan, allowed it to freeze then cut a slightly oval shape. I had outlined the pattern on wax paper and followed that template onto the cake. My husband found a picture of him and enlarged it and cropped the photo to show just the part of his face visible through the visor.
I wrapped the picture in plastic wrap and placed it on the decorated cake then piped around it with additional icing to keep it secure. The plastic wrap added the extra touch making it look more realistic and the cake was a huge success.