You can also find different photographs and pictures online to add to your scrapbook theme.
Do take the time to write a personality profile articulating the characteristics of your cartoon brand mascot. Write his life story. Tell your customers all about him. Flesh out his personality, and be sure he behaves consistently with who he/she is.
And then your friend finds out. Will he be a little bit hurt? Maybe. He might claim that this is his first time being late, that he won't ever be late again-well, that's not such a big deal. You don't have to argue it with him. Just explain. Tell him you're not crediting the clip art to him, so it won't sully his reputation (and if you have done your work right, the free graphics you've got are good enough that he shouldn't worry). Tell him you're just waiting and that you needed something in place. If he's really concerned about his art, it might speed him up; if he isn't it might slow him down. In either case, with your free clipart, you're set. You can let things run themselves and go join your buddy on the couch for potato chips and movies. After all, he might not start working on your project any time soon.