Alright....Materials:1/4 yard of cotton fabric
-1/8 yard of other cotton fabric1/2 inch thick elastic.
-The 2 pieces of fabric need to be exactly the same length. To get the right length that you need, measure your child's waist, and then double it.-thread to match your material
-sewing machine
Step 1: Iron your 2 pieces of fabric in half (length wise) and sew your ends together (separately) to make one full loop. I hope this makes sense. Maybe the pics will help.
Step 2: get the piece of fabric that is going to be your tab (1/8 yard) after it has been sewn to make a loop and iron it so that the 2 raw edges are lined up. Make sure that you iron it so that you can see the right sides of the fabric.
Step 4: Iron the tab down, make sure that everything looks right. Then, measure and cut your elastic to fit your little girl's wast. I made a skirt for a newborn, so I measured the elastic to be a little bit smaller than the wast of the newborn onesie so that it would be stretching a bit and not falling off of her.
Step 5: So, you want to hold the skirt up to your little girl and cut it to be two inches longer than where you want it to fall. Then, at the top of the skirt fold it over and iron twice to make slot where the elastic is going to be. You fold it to be 1" folds. Get it? That's why it's going to be 2" longer than you want it to be. Now you sew along the bottom of the fold so that there will be room to put the elastic in. Stop when you have about an inch left of sewing.
Step 6: Insert the elastic. I did this by putting a safety pin on the end of the elastic and feeding it through. Don't forget to hold on to the other end so you don't lose it! When you have the elastic all the way through, sew the 2 ends of the elastic together. Then, finish by sewing up that spot where you fed the elastic through.