Design a vector art template (.ai Illustrator or .svg Inkscape, please) of the front of a coloring book. The actual art on the front cover should be replaceable, so that I can display several coloring books in a grid on an iPhone/iPad screen. It should also have enough fidelity that I can display a single coloring book full-screen on an iPhone/iPad. Basically, design for rendering as small as 60x80 pixels and as large as 1536x2048.
It should appear like there are many pages in the coloring book (there will actually be 10-25 pages, but this design should just look like it's a decently sized coloring book). The coloring book should be portrait shaped with roughly 3:4 dimensions.
Take a look at the attached screenshots to get an idea of the context of where this image will be used. These screenshots show a wood background, which I may use, but I may also use a dark gray or other background in the end.
Note, the attached screenshots aren't all that beautiful. I'm looking for something more professional and attractive. If there were a price tag in the lower-right corner of the coloring book, it should make you desperate to buy it, and make you feel like you were getting a really good value.
It is important that it be easy to insert new cover art into the template. This is probably a good use case for Smart Objects if you're using Photoshop. I have CS5 and know how to use it well enough to get into trouble, but not much more.
Remember, this is all about the lines, shapes, and forms of the edges, binding, and bits of pages sticking out. Don't focus on the actual art of the cover, since I'm just going to be replacing that later. You can grab any (classy) image you want and stick it in there.