There are multiple ways to re-vamp an old sweater. (Here is one way I refashioned a sweater over the summer). One of my favorite ways to change a sweater's appearance is to crop it. Sometimes cropping tops can be a hassle because you can end up doing a lot of sewing. However, there is a way to avoid sewing.
To avoid sewing, try finding a sweater with texture. This sweater was perfect for this project because it had various hems I was able to cut at.
I also cut around a hem at the collar to open the neck up a bit.
Note: If you cut too high or too low, there will be fraying. Try to make your cut right below the base of the hem.
The scrap strip of fabric I was left with was the perfect size for a headband, so the process was really simple. I simply sized it to my head, cut it at the hem, and sewed it together with white thread.