I sew with a needle for the size of thread im using. The material is really easy to punch through so just size the needle to the thread. My stitch length is something like 3-3.5mm
As for sewing, i dont use tape. I just get my corner set then feed it slowly until its pass the feed dogs. Then hammer down. If it gets wonky, like the flat felled seam for my tarp, i'll pull from behind, use my forearm to ensure material is flat, and use my right hand to keep the material aligned as i send it.
The hardest part is being comfortable sewing, past that its just small nuances.