Just completed this assignment of a couple on a Jetski for their company Newsletter. The hardest part was drawing the Jetski jussst right! they loved it.
One of my favorite character artists, is Terry Dunnett, affectionately known as TEL from Australia. (http://www.terrydunnett.com.au/Tels_Caricatures/Home.html)
In addition to being an excellent draftsman, Tel is a master of drawing accessories. By "accessories" I mean supporting items in a picture that the main characters interact with. Examples of accessory items, are cars, planes, snowmobiles, and jet skies. Prior to being exposed to Tel's work, I focused pretty much on the individual figures, and pretty much "winged" everything else. Even though my clients did not complain, I knew deep down, I had compromised, and given into lazy drawing. In comparison to Tel, whose accessory items were just as meticulously detailed as his caricatured. Visually, this added to the overall unity to his pieces as well.
That's when I started really concentrating on getting the accessories correct.
If a client takes time to mention they want a particular car or golf clubs in a picture, then obviously the item is an extension of them. This is the Bain reason why they should be given as much attention that you give to your favorite part of the drawing.
This particular jetski took me days to get to my satisfaction. It's not perfect, but definitely better than I might have done, years ago.