your temp is out of wack. With the silicone molds, I do not use any spray because we can not get it in Canada. When we could, i used and only sprayed once. Now never. Rarely sticks Only sticks when a)pour to hot or b) an air bubble
The fine cracks, trying to get the candle out to soon
the fine surface bubbles, over cooking the wax. Either in rendering cappings or in melting and keeping hot.