How to Adjust Knitting Yarn Tension

"Now I'm going to do one more row of that "knit two, pearl two" so you can get the hang of it. See, the trick of this is just remembering when to pull the yarn back and forth. So here we go. The way that you get the pattern...we are going to knit two. The way that you get the pattern is that you are knitting on top of a pearl and you are pearling on top of a knit. So here comes the knit one and a knit two. See, I'm catching myself there because I did it a little tight. Another thing you have to remember is don't knit too tight because when you do, it is just a nightmare getting that stitch off, and you don't want to make anything tough for yourself. So, we are on pearl one and pearl two and then throw that yarn back over; goodbye! It's time to knit; and knit one and knit two. Oops! See what happens? I must have done that stitch a little tight. But, it doesn't matter, we've fixed it. And now we are going to pearl. Pull the yarn to the front. Pearl, pearl, pearl one and pearl two. Now we are going to pull it back to the back and we are finishing with knit two. I just did that first stitch too tight. That's a good example for you. Knit one, and knit two; excellent! There it goes. So, now we've got our little...we could make this into some sort of a...maybe I'll make it for a cat. I'll make some sort of cat scarf."