Welcome Cara and Nathan.
Your first image here is your cover...stretching from back to front.
The next image #1 and last image #20 are your inside cover images. on the left/right are blank.
The remainder are spreads reaching from left to right.
If you'd like anything changed around or images swapped to their color or black &white image let me know. As soon as everything is as you like it the book will be ordered and I just need to know what you'd like to do about the canvas credit. :)