Night Sky Halloween Costume
Feldi 
Finishing the Garment
Once all your LEDs have been sewn into working circuits and you have tested/debugged them, you can finish sewing your garment together.
STEP 15:
Remove the conductive thread from your sewing machine and replace it with regular thread. Sew together your cotton fabric for the outer layer of the garment according to the pattern.
STEP 16:
Sew the lining (with your circuits) with the outer cotton fabric. The battery side of the lining and the outer side of the cotton should be touching while you do this. The LED/LilyTiny side and wrong side of the cotton should be facing out --- kind of an inside out situation. Make sure you leave 6--12 inches of unsewn hem to bring the right side out later, as shown in step 19.
STEP 17:
Lay out the garment flat, with the lining face up, and iron on double-sided, iron-on adhesive to the areas around your circuit.
STEP 18:
Peel the paper off the iron-on adhesive.
STEP 19:
Using the area of unsewn hem, pull the right side out from the inside so that the LEDs and LilyTinys will now be inside, and the battery packs will be outside. Once completed, your garment should be right side out, and the raw edges of fabric hidden inside.
STEP 20:
Make sure the garment is fully right side out and begin to iron over the hems, making a clean, flat edge.
STEP 21:
Iron around your circuits to activate the iron-on adhesive against the cotton. This will keep the two fabrics from separating, thus making sure your LEDs can be visible at all times.
STEP 22:
Find the unsewn area on the hem. Fold the raw edges inward. Pin them together, and then sew along the edge.
STEP 23:
Sew on any notions (i.e., buttons or clasps).
STEP 24:
Put batteries in all your battery holders and turn on all of the circuits. Lay the garment out with the cotton fabric side up. Using the constellation map, draw lines between stars using glow-in-the-dark puff paint.
STEP 25:
Leave it overnight to dry.
STEP 26:
Flip the cape over to the other side and cover all the conductive thread traces with the remainder of the puff paint. This will insulate all of your circuits and make the garment safer to wear. Let dry overnight.
STEP 27:
Once dry, turn on the switches for each battery holder to light up the LEDs.
STEP 28:
Put on the cape and enjoy!
