How do I sew the pieces together? Right or wrong side. Explain the mattress stitch to me if you can. How about other suggestions.
Mattress stitch is done with the work side by side right side up.Here's a couple pages that might help. Scroll down to finishing techniques here:http://www.knittinghelp.com/videos/knitting-tips
Another couple sites that have good instructions.http://community.knitpicks.com/notes/Seaming_-_Mattress_Stitchhttp://www.knitty.com/ISSUEspring04/mattress.html
Here's a good YouTube video by Norah Gaughan: