My top three reasons why I love working in smaller formats:
1) Convenient carrying size…
1a) which thereby allows you to indulge your pen addiction!
(I always like to have assortment of pens on hand, you just never know!)
2) With limited space you are forced to capture what is essential.
3) The plight of most artists are the piles of incomplete sketchbooks (I have four on the go now). However, with a smaller format I guarantee you will have a completed sketchbook!
*The sketchbook I am using is MUJI mini stationary pad. www.muji.com