I sew on a Bernina and I lower my stitch length down to 1.5 and use a 90 needle. Here is a link to Judy Neimeyers instructions.
http://www.quiltworx.com/pdfs/founda...perpiecing.pdf
Carol Doak does some really good instructions in her books and she also has a video but I couldn't find anything free on them. She does have a blog and has several free blocks out there.