The thread on old crafts reminded me of this. I looked in one of my stashes and found the pattern and kit to make this. Remember we ironed the pattern on the shirt and then glued the sequins on to the tiny dots on the patterns.

this kit must have been at least ten years old. The glue was still good (I had to buy more ok to wash it glue) but the pattern wouldn't iron on the sweat shirt so I had to kind of eyeball it.

It was fun to do and of course the pattern can be used over and over. The picture is a little pale and of course the shirt isn't flat.

Here is a link that might be useful: