how to seam up a shoulder seam and master the mattress stitch

being a knitter who hates finishing work, these videos will be in my can't live without resource file. i hate seaming, especially when it comes to sweaters but i've finally decided to get over my fear. berroco has a series of how-to videos you can watch if you are like me and are a visual (aka can't figure it the hell out no matter what i do) learner. you can find the rest of berroco's videos here.