Remember that the thicker the yarn, the warmer the leg warmers will be. You can certainly use thinner yarn, just be aware that they won’t be as cozy as the ones made with bulkier yarn.
The hook size suggestion doesn’t have to be followed, but your crocheting might turn out knotty or too loose.
Remember to hold the yarn tight enough to keep its tension, but loose enough to let it still slide through your fingers.
To make one chain stitch, you’ll want to hold the hook in you right hand and loop the working yarn over your left index finger. Hold the end of the slipknot between the thumb and middle finger of your left hand. Then, bring the yarn from back to front around the shaft of the hook, drawing it through the loop on the hook. Repeat this to make the first row, or foundation chain.
To make a single crochet stitch, insert your hook from front to back in the center of the second chain from the hook. At this point, you should have 2 loops on your hook. Yarn over, or twist the yarn from front to back around the hook, and pull the yarn through the chain. Again, you should have 2 loops on your hook. Yarn over again and draw through the 2 loops. You’ll now have single crochet stitches.
Turning your work simply means rotating it so that the last stitch you worked becomes the beginning of the next row.
To half-double crochet, yarn over your hook once and skip the first 2 stitches on your row. Insert your hook into the center of the third stitch. Yarn over one and then pull all 3 stitches through the chain. You’ll have 3 loops on your hook. Yarn over again and pull the 3 stitches on your hook.