|When tracing multi-sized patterns -- Burda magazine, Kwik Sew book and commercial ones, etc. -- I like to use clear plastic sheeting. You can find it usually in the paint section of Home Depot, Lowes, Wal-Mart, etc.
The "Medium Duty -- 4 mil" is best suited for pattern tracing - it's durable, won't tear and stays in place.
You can get a roll (3 feet x 50 feet) for less than $2. It lasts just about forever and is wide enough so you don't have to tape bits together for those large odd-shaped pattern pieces.
I use Sharpie brand markers to trace -- they don't smear and move easily when tracing - no sputtering nor skipping. In fact, if you want to get really creative, buy them in different colors and color-coordinate your tracing. I have even found
sets with "tropical" colors of purple, turquoise, orange, etc. in the office supply stores, particularly during back-to-school promotions.
For the first trial pattern tracing/fitting, I'll use blue. Red is good for making the alterations. When I finalize the fit or want to make a final copy, I'll use green (for go!). I also used these a lot for the master paterns in the Kwik Sew Sewing for Babies, Toddlers, Children books. I would use a different color for each size to make it easier to find and eliminate using the wrong pieces/wrong size the next go-round!
The see-through plastic makes it so much easier during pattern layout and cutting to match stripes, prints, etc. It also holds up to repeated pinning, and stays in place very well with pattern weights, too.
The easiest way to store your plastic patterns? Roll them with the smaller pieces inside the larger ones, secure with a rubber band and stick a Post It note identification underneath one of the layer rolls or the rubber band.
Oh, I forgot one more thing (or two!) -- The pattern pieces become great places to make notes. I'll write the pattern number and size on each piece, of course. But then I'll add the date and fabric I used each time...how much bias I needed to cut to finish armholes, necklines, etc....also amount of elastic used...number of spools/bobbins of thread...
It's not just a pattern anymore, but a historical document!