I think I get the picture now. You just knit that last stitch then turn and knit across again.
Your tension mostly comes from the 'working yarn' which is the yarn you use to make the stitches. Most people find some way to wrap it around their fingers so their knitting is not too tight or loose. Just find a comfortable way to do it that works for your style of knitting and keep at it.
You're learning right now. Don't worry about how it looks. Just concentrate on making the stitches correctly and making your hands become accustomed to a new technique. Keep knitting even if it looks wonky. That's how we all learned.