Settings: f/1.8, 0.6 second, ISO 100, 50mm prime
Set up. Draw around the lens cap on a piece of black card. In the centre use a modelling knife to cut out the shape of your choice (in this case, a heart). Remember the greater the distance between the bauble & the lights, the better the bokeh. You could use a torch to illuminate the bauble if it appears too dark in the image. Focus on the bauble then place the cut out card in front of the lens (ensuring there are no light leaks) & take the shot.
Opinion. This is a similar photo to the very first one I took when starting this project. However, I’ve taken it a step further by altering the shape of the bokeh.