This is a very pretty apo fractal, Id like to see it at higher resolution, see if some of the jagged edge would come out smoother. I generally export my flames at 1600 to 3000 quality with a filter radius of 0.6 and oversample of 2 and abuffer depth always set to 64. See if those settings are useful to you at all.
Sometimes jacking up the quality higher doesnt help, If I can remember right the higher the quality the more the color for a pixel is more distinct/exsact. Probebly the most import fuction is to always have 64 bit color down because the shading gradient is more smooth. The radius fuction is where you blending comes in, see it as a form of anti-aliasing setting like in photoshop. Oversample I have no idea what it does. I just know that for me that was the best setting. So yes things look alot better, with a fractal like this, id probebly dumb another 20 minutes into phtoshop to smooth a few more lines by hand, but other then that, thats a great fractal, I couldnt do better even if I tried real hard.