A good pair of jeans can be hard to find. One common fitting complaint is the gap that sticks out at the waistline. To fix this, sew a small piece of elastic to the back of your jeans.
Picture: I Am Momma Hear Me Roar
Jeans sometimes fit at the hips, but then they gap at the waistline. Website I Am Momma explains how to fix this with a small piece of elastic and some sewing skills. She uses a 15cm piece of elastic, about 1cm thick:
I started at the middle and sewed to the end using a zigzag stitch. As I sewed I pulled the elastic quite tightly while I let the denim layer feed through the machine normally. Then I did the same thing again. I started in the middle and sewed to the other edge. This made it so that the elastic was centred and I didn't stitch through the belt loops on the other side. Lastly I did one stitch in the middle, also making sure not to stitch through the belt loops.
As you can see from her photos, the elastic creates a small bunch in the back of your jeans, eliminating the gap altogether. For more detail, check out her full post.
Crack Kills [I Am Momma Hear Me Roar]