Wash it, dry it, detail it with some WD40. Then take your pics. Take note, if you get WD40 on the engine or pipe, run it before showing as it will smoke off. Good and clean chain, sprockets (worth replacing), clean air filter and box, clear break fluid, and reasonable tires. Let'em ping you on the tires if need be. The other items show you took care of the bike, and most buyers would feel they need to replace them prior to enjoying the bike. Which means cost and time to them.
Death is like an old whore in a bar, I'll buy her a drink but I won't go upstairs with her. Hemingway