Completing the garment

How do I sew the pieces together? Right or wrong side. Explain the mattress stitch to me if you can. How about other suggestions.:knitting:

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_Stitch
http://www.knitty.com/ISSUEspring04/mattress.html

Here’s a good YouTube video by Norah Gaughan:

//youtu.be/s5mdgxvMS5Q