First, gather your stuff.
Put the sequins at the pin like the photo shows. A bead, then the first sequin upside up, a bead, another sequin, a bead, and a sequin upside down. Be careful, you don't want your finger crossed by the pin.
And now put the sequined pin on the rubber ball.
And that's all... repeat the step 2 and 3 over and over again until the ball is full of sequined pins. Enjoy! :D