I forgot to do it on this one, but, BEFORE YOU RENDER, look on your tools

menu at the top & just under  variation there is a # shown with a drop down arrow next to it. Click on that drop down arrow and change this number to 100.

This will reduce the noise in your  image tremendously for a more clarified finished picture. Be sure to change it back after you render to save load time for your next flame. The lower numbers load the flames & mutations faster but don't reduce the noise in your rendered image.

 

 

In Your Options:

The higher you set the quality and oversample and the larger the size, the longer your render will take. This one took about 2
minutes. The same flame at 10000 quality or 2000 width could take anywhere from 45 minutes to a day to render. It would look the same on
the computer but would be of a more printable quality. Some people set these items so high as to take a couple of days waiting on a render.
NOT ME! I just don't have that kind of patience...lol
 
Always leave the maintain aspect ratio checked. You can resize in your paint program when you finish up your fractal. Also, the png default is only applicable if you have set your preferences as shown at the beginning of the tutorial.
 

 

Saving Renders:
If you want to render more than one mutation of the same starting flame you will need to highlight the folder box and add an "a" or "b" etc to the end of the
number of the flame before you click on render or it will overwrite the original one you saved. I seldom use the same flame more than once because there are soooooooo many possibilities there is really no need to.
 

 

 

Additional Editing Notes:
You can also change the look of your flame by clicking on theVariation tool & choosing one of those. Or use the Edit tool and click on the triangles and move them around.
 
And if you really want to get into it, there are lots of scripts available for you to use as a starting point, but thats more in depth and there are lots of tutorials
and resources for that on Deviant Art.