I made this blanket for a very good friend of mine who is pregnant with her first child. She isn't far along enough to know the sex, so I tried to pick a yarn that would work for any baby. (and naturally I rebelled against the plain yellow or green neutral baby colors, cause that's just what I do.) It turned out quite a bit larger than I anticipated. I wasn't really following a pattern, so I cast on way too many stitches. Then by the time I realized it, I had gone too far and didn't want to start over again.
By the end of the blanket, I was having a little trouble and scared of losing my work, so I knitted the edges tighter so they wouldn't fall off the back end of my needles (this happened once so I was paranoid.) This resulted in the edge of the blanket being tighter than the inside, so it doesn't really lie really flat unless you smooth it out each time. And apparently I cast off tighter than I cast on, so the whole thing is more of a trapezoid than a rectangle.
All in all, it's definitely not perfect, but it's the first blanket i've ever knitted so yay! I gave it to my friend last weekend and she loved, flaws and all, because it was made with love. awww. I currently have a second blanket in the works, using size 50 needles - yikes. more on that later. :)