Keeping in mind the possibilities discussed above, the first thing you have to do when you are considering making a minicomic is decide what size and shape it will be. You can do this one of two ways:
Look at the work you want to print, and decide what size and shape of book will fit it best.
To do this, you should measure the pages you want to publish, and figure out what shape and size page would fit it best. Are your pages close to a 2 x 3 proportion, like traditonal American comics pages? Then you may want to stick with the standard “digest size” mini. It’s a bit tall and skinny, like your art. Are your pages more squarish, like European comics pages? In that case, a legal-size folded in half or maybe a “minicomics size” book would fit better, since they are more square-shaped. Once you know your ideal mini format, use your proportion wheel to figure out how much to reduce your pages and continue from there (see below, step 2 for more on that).
Decide on a shape and size for your mini and draw new work to fit.
This is the best choice if you want to do a mini in an unusual format, or a really small one, or something. Your pages that you draw at 10” x 15” won’t look good reprinted in a “micro size” mini.
To do this, figure out the page size of your mini by making a mock-up blank book to figure out the fomat, then measure the pages to see what your final size should be. then use your proportion wheel to size those measurements up 125% – 200% (see step 2), and draw the comics at that size.