Hi Folks We had the same problem with bubbles and it was caused by the mold release, that silicone spray sure is slippery. The cure we use is to polish the surface where the decal is going with a pair of tights, this scratches the surface slightly and helps the adhesive to stick to the candle. Also with the material we use here in europe (lazertrans) you apply as normal with water and before the decal is dry we paint on some methalated spirits, this helps the decal to stick better. Conor It's not raining in Ireland