Include enough text so you have the flavor of how you will proceed with other pages. Just put them in with bold text. Site Logo Here. Plea for bookmark here, and so forth. Also describe any ideas you have regards the art work needed.
Colors are always important.
Be sure you are clear on the colors you want to use. Then ask Kate to look at it and make suggestions regards what will work best. When you've settled on what you want, she'll give you a quote. Take it, kick back and wait a bit. But the wait will be worth it.