Select a skirt and start planning where your pixels will go. Above is a diagram showing how to connect all the parts of this circuit (click to enlarge).

Since the conductive thread has nontrivial resistance, pay close attention to the extra connecting power and ground lines on either side of the skirt-- they will help your colored lights shine to their full potential.

Lift the outside layer of the skirt away from the lining. If they are attached with small threads, snip them.

Place your components on the front of the skirt lining according to the diagram. We'll do the back pixels separately, after all six of the front pixels are working.

Lift each component and make a mark with a water-soluble marking pen (or just use a very fine tip permanent marker to make a tiny dot).