Materials:
>>>Two yards of fabric.
Regular cotton fabric works great. You can use a flannel in the winter if you want. I liked to make sure that mine is mostly white with the print.
>>>1/4" Elastic, cut to 80"
I find that it gets pricey to keep buying this stuff at Joann's or what have you, (coupons people!) so I just get mine on Amazon.com. $.50/yard
>>>Sewing Machine (no serger needed)
>>>Measuring tape
>>>Fabric Scissors
To begin, fold your two yard of fabric in half (keep the selvaged edged together - no need to unfold).
Trim the side opposite the fold so that it measures 34" folded (68" total)
Cut an 8" square out of the corner (the corner with no folds, or you'll have a hole in the middle of your sheet). When you're done trimming and cutting, it should look like this.
Unfolded, it looks like this. 45" by 68"at the widest and longest points.
Let the sewing begin! Start at the corners. You're going to bring the WRONG sides together first, to prevent any fraying or ugly edges, edge to edge. Start at the fold and sew toward the edges, like so.
Then, turn the corner inside out, and repeat your sewing steps. Give yourself enough seam allowance to cover the edges.
Here's what it looks like when you're done on the inside. See? No frayed edges!
And the outside. No frayed edges here either!
Repeat on all four corners.
Now you're ready for the edging! You can iron 1/4", but I prefer to just hold it as I sew. Time saver hack right there :). Sew the entire perimeter of the sheet.
Next, (you're almost done!!) you'll sew the ends of the elastic together.
You can iron again here, or you can use your new hack, and sew as you go. While you're sewing your elastic casing, be sure to avoid sewing the elastic itself.
Look what you did!!
Have a little helper help you stretch out your sheet so your elastic is evenly distributed.