Originally Posted by rushdoggie
but how? I'm not sure how to insert the elastic and ensure there's a tight enough pocket...
You can go to the link:
http://www.youtube.com/watch?v=qT8n8M5ITg0
This gal is really good at explaining how to make a top fitted sheet. Use her ideas. You will need to take apart the sheet you want fitted and remove the elastic. Use that elastic in the project. You will need to cut the sheet down to size after removing the elastic. Hope this helps.