Here's a couple of tidbits, or more.....
*Can use a marker and an old magazine...hold marker by the end as you draw the stippling endlessly...this gives you the understanding of direction and practice to get what you want in a design.
*Can use a stencil to 'pounce' on or draw on to help you get the flow of this and rythm too.
*Could use a big puzzle piece from a smaller child...as they are very much alike in pattern. (anyone w/those old, big puzzle pieces...don't throw the out!)Use that as a guide or etc.
-Most of all....just do it:)take a scrap and practice...you will find what you like and gain the confidence to what you are doing....the videos here (posted)are great too! Skeat