I place the plug in bottom of my metal mold, place a Glass tea light holder on top of that. When the candle comes out just take out the plug & your glass tea light is embedded into your candle ready for a tea light to be inserted. Kay-- are you out there? Need your help! SOS anyone.... Help save the day!! I finally received my tealight insert plug and followed your directions above. After it was just about impossible to get the insert plug out of the mold I discovered another problem-- the tealight glass was too low inside the pillar. GRRRRR! But it sure was beautiful, which is what broke my heart. Hubby says, "I think you need to cut some of that silicone off the plug to make it level with the TL glass." I think the TL glass I used is about as pretty low profile as it comes. Would it make a difference if the mold is flat or concave? I think the problem just lies in the fact that too much of the plug sticks out of the glass TL. What to do? Many thanks~~~ does it look like this? I have had no problem with the glass being to low...my plug fits almost flush with the TL glass. actually the glass ticks out just a hair.