Palm wax can be a real pain to work with. After you pour it, while it is cooling, you need to poke relief holes in the top of your candles, and keep them open while it is cooling. If you don't you could end up with air pockets in your candles. In my jar, I would poke 4 in the top and keep them open periodically during cooling, then once cooled all the way, I would hit it with the heatgun just briefly to melt the top a bit and get it to run down in the holes to fill up any caverns that might be there, and the relief holes. Everyone has their own method of working with palm, so you just need to find what works best for you. To me, there were to many pains with palm, so I gave up on it, but a lot of people have mastered it and love it.