Fused Plastic Rain Coat

Step 4 Sleeves

Fold the pieces for the sleeves in half lengthwise, lining up the edges of the seam. If you are incorporating part of the fabric details in your design, be sure to keep the design to the inside of the fold.

To ensure I only fused the seam allowance, I created a simple paper guide.
I folded a piece of paper length-wise about 1 inch from the edge, leaving the folded edge sticking straight up.

Set this with the folded edge right on your seam and the rest sticking off the fabric so only your seam allowance is covered by the paper with a lip to keep the hot iron from the rest of the fabric.

Iron along the edge, being sure not to push beyond the folded edge.

You should end up with a nice tapered tube for each sleeve.

Optional Step.
At this point you might want to fuse the seam flat to one side or the other,
..(for reasons why see step 9.)
Open the sleeve, rotate and refold with the seam in the center of the sleeve facing up.
Cut a piece of heavy cardboard to the shape of the sleeve and insert it inside.
..(A heavy cardboard tube might work for this as well.)
Stretch the seam open and fold the allowance to onside and carefully fuse it to the sleeve.

Invert each sleeve, so it is right-side out.