Concertina Dazzle Days

If you don't know what a Concertina Sketchbook is, it is folded paper (back and forth) that looks like the bellows of an accordion when done.  Concertinas can be home-made or purchased, and they are fun to work in.    

The photos above are of three continuous two-page spreads from my own Concertina (the one on the right - the latest). The mark-making was done with Sharpie markers, Posca pens, Micron pens and Sakura PenTouch markers.  

All the shapes and color choices in the images above were spontaneous as well as the details.  There was no plan.  What I like about these is that each two-page spread collaborates with the next one and so on (as the designs spill over from one spread to the next). As new ones are created, they  add to the wonderful visual feast.

One of the things I love doing with these also -- is to crop sections and digitally mirror them to form symmetrical designs. The results are occasionally delightful.  In fact, this one was made from such a process and has a neat Art Nouveau feel.  

How do you work in a Concertina, if you use one?  If you do, do you have a favorite way of working in it?