If you edges are not straight, it is likely because you left out the chain stitch at the end of each row. This decreases your stitches by 1 each row and changes the size. Another possibility is that you accidentally skipped stitches, or put two stitches in one (increasing.) To fix your problem, know how many stitches are supposed to be in a row of your blanket and count them when your blanket starts to get wavy.
Your blanket could be curving if you are not keeping a uniform tension on the yarn. This can cause some areas to have more yarn and others to have less yarn. You will learn through practice to maintain tension on your yarn.
It sounds as though your tension changes when you start to work your stitches into your foundation chain. Try a hook size smaller after your chains. You could probably disguise a wavy edge with a scalloped edging.
sharp
Yes, you can make an Afgan blanket by knitting or crocheting while following a premade pattern or making one yourself.
Usually your grandma (that's either your Dad's Mum or your Mum's Mum you know) has made a blanket by knitting or crocheting wool or yarn. That kind of blanket is called an afghan.
A blanket stitch is a strong stitch, similar to a buttonhole stitch, used to finish and reinforce the edges of blankets.
The old blanket was frayed at the edges.
My grandmother loves crocheting.
the full sized blanket would probably cover the mattress but it would not drape over the edges of the mattress.
"Self binding" means that the article (a baby blanket, in this case) is bound or sealed with the same fabric it is made from. so, if you wanted to make a self binding flannel blanket you would use the same flannel to cover the raw edges of the blanket (as opposed to using pre-made blanket binding).
this seaweed contains air pockets witch help it stay afloat
If you crochet, you could try crocheting an edge on it. There is a book by Nancy Epstein that is also about adding knitted edges to items. Good luck ! LISAJMH
Blanket binding that you purchase is cut on the straight grain and can only be used on straight edges. To bind curves, you must have bias binding.