Continue stitching the ground line all the way around the perimeter of your sequin design, stitching to every sequin's - pad as you go.
Knot to your original knot, seal the knot, and trim the ends once dry.
Next hook up the + connections from each of GEMMA's outputs to three pixels. We stitched from one sequin to the GEMMA, then over to another sequin and on to the third sequin before going back to the first, making a sort of square that results in the thread tails being in the same place.
Knot these thread tails, seal and trim short.