Use some blank paper to make a booklet the size and length your finished mini-comic will be.
Number each page large enough to see the numbers easily.
Unfold the dummy and look at each block the fold lines and paper edges make: Some numbers will be upside down and, especially if you used two or more sheets of paper, the numbers are not necessarily in numerical order any more.
Now that you have your dummy made, it's time to fit the content to the layout diagram your dummy provides. Your master can be the same size as your finished product or it can be proportionally larger and shrunk down during the copying step. This will be the document you copy to make the actual mini-comic booklets.
Divide your content into pages. Consider the space you have available for each page and divide your comic between the pages.
Resize your originals. If you have a scanner or are working with digital images to begin with, simply resize each image to fit the available space.
If you are using a copier to resize your images use a proportion wheel to find the percentage you need to reproduce it at.
Lay out the pages. Following the numbered dummy, place each page in position on your master. If a number is upside down on the dummy, the corresponding artwork needs to be upside down as well. Create each side of each sheet following the dummy.
Make a test copy. After assembly, make a test copy of each sheet, front and back, and put together the mini-comic to check that all the pages are pointing in the right direction and are in the correct order. Check the copy quality for any spots that need cleaning-up or replacing before you begin production mode.
Copy your masterpiece. Now that you've laid out and tested the master, make as many copies as your wallet will bear.
Fold each sheet into the size you settled on. If you nested two or more sheets for your dummy, fold each signature (individual sheet) separately before collating them together. Use a bone folder to get sharp creases and save your fingertips.
Staple the spine. Two staples are better than one to hold the pages together.
Trim the folded edges. Any fold that isn't part of the spine will need to be opened up. Place a metal ruler a millimeter or two from the folded edge and run a craft knife through the layers to eliminate the extra folds and neaten the edges.