Some tips for sewing with vinyl include using a Teflon footplate on your sewing machine, taking smaller stitches when working on heavier or thicker vinyls or applying a stabilizer such as fusible web to the wrong side of the vinyl before you start sewing.
Folding vinyl fabric will create hard to remove creases. Instead of folding, keep the fabric stored into a roll preferably in a vertical position as the roll will flatten in time when stored horizontally, thus creating creases and uneven surfaces.
Pressing vinyl fabric with a pressing iron will make it melt so don’t ever press vinyl! If you experience any crease, hang the fabric in the sun, using clips attached to one edge.
You need a large cutting surface since vinyl will not bend and fold as regular fabric. You will also need a large working area to avoid creasing and scratching the fabric while sewing vinyl.