So I bought a side sleep pro pillow and after putting a pillowcase over it I realized you can't use it correctly with a regular pillowcase because you can't fit your shoulder in properly. So I went about making my own. My sewing is still really crappy but enough to do the trick. Please be gentle with my sewing skill and poor planning.

Materials:
-Fabric
-Sewing Machine
-Pen, paper, scissors

Cost: High: $10
Low: $0

Time: High: 1 hour
Low: 2.5 hours

Step 1: Cut Out the Shape

Pic#1: Cut out shape on newspaper

Pic#2: Cut

Pic#3: Pieces cut out

Step 2: Sew Inside Out

Start at the bottom corner of the long side of the pillow. I followed how the pillowcase that came with it. I left that rectangular portion for last.

Pic#1: Where to start and finish

Pic#2: Leave some material when you begin because thats where you'll close at

Pic#3: One side finished

Step 3: Sew on 2 Pieces for Pocket

Pic#1: Before pocket, I cut off that excess for a one of the two pieces

Pic#2: 2 pieces cut out

Pic#3: Sewed the edges

Pic#4: Just wanted to finish so I didn't go into detail

Use the excess on both sides to sew on the inside the two pieces, one of the pieces should overlap the other