At first, it confused me that the front cover was on the right hand side but I've got it now.
The following points also need to be considered. They're in no particular order and the list is probably incomplete.
- Printers Marks
They are the lines in the corners. They allow for inaccuracies in the printing. Allow large empty spaces around text and other graphics and there won't be much of a problem. The closer that you want to take them to the outer edges the you should understand print marks, bleed areas and so on.
- Spine Width.
If you are going to add text to the spine then you need to know how wide it's going to be. Some designers like to have a different style or colour to the spine. Bear in mind, it works if you are confident with the accuracy of your measurements. If they are wrong then it's going to look untidy.
- Back Cover Text
You have about a 150 words to sum up your book. Don't try to cram too much in and allow space for the bits underneath.
If you've bought an ISBN number then you probably hold the imprint. Put simply, you are the main publisher. There's nothing wrong with adding a logo.
In the example above, there is a space for it in the bottom, right hand corner of the back page. Just remember to leave that corner empty.