I'm knitting one row knit, one row purl to make a pencil case (it was going to be a purse but it's turned out longer than I thought
). The smooth side is the outside so I thought it would be nice to put a couple of lines of texture in there
This looks simple enough hopefully but if you knit two together do you not end up with a triangle by the time you've finished? 
And how do you do yarn over?
Ah, wait a minute! Is yarn over making another stitch on the needle so you keep the same number of stitches?? How do you do that?
Can you tell I'm not very good experienced at knitting? 