Make Resin beads

Resin clay has a shelf life so if you find your clay either a little on the old side or simply too hard to knead the parts together, carefully add a drop or two of isopropanol (rubbing alcohol) which is available from the drugstore to lubricate things along. Knead until well blended together. I use my hands as resin clay is safe to use but please use gloves if you have a lot of sensitivities.
Small beads can be made completely out of resin clay. Just roll a small amount into a ball and stick a skewer right through each bead. There will be some distortion on the exit site. So carefully fix the bead up after you remove the skewer.
Now stick a grommet on each hole so it looks like the bead might have a metal core. If you are using actual metal cores then make a resin snake to go around it, patting the clay smooth. If a bit of clay gets in hole, gently remove it with the pointy end of the skewer. Always make sure you have a through path.