I have found that the $1.00 a yard fabric at Walmart is just not reliable fabric. Even if you are just starting out and practicing try to buy good 100% cotton fabric it makes a real difference and you won't get frustrated. That being said I have made "sensory quilts" for the neonatal unit that my son spent the first 3 months of his life in and they have every kind of fabric imaginable in them, the more the better the doctors say, and they get alot of use in the unit and have to be washed and sterilized often.