Following is my waxing steps from a doc I made a while ago. One thing that I suggest is that you get a clean inexpensive paint brush to wipe off the bases between steps. So after scraping for example you wipe off all the shaved wax, after the first brush pass, the same. This will help in many ways, in particular keeping your brushes clean. I also run my brushes along the sharp edge of the table between passes to clean out the bristles.
Of great importance is your iron technique. Some people move it around a lot, circular movements, back and forth, etc. In all cases you never want to leave it in one place. Me, I like to go extremely slowly tip to tail leaving a nice 2-4" molten layer behind the iron. Doing this is very satisfying. Often I need to go back a little as a section didn't melt, but when it works in one pass with no back and forth it's a good feeling - technique! Also as Mike D. told me years ago, always keep a very slight upwards pull on the iron, away from the base, so it's not putting hardly any pressure on the base. This both protects the bases from excess heat and also creates a little suction that helps to evenly melt the wax. Slow motion with a slight lift.
I do three passes, two as above, the third with a sheet of fiberlene between the iron and the base.
Steps
Drip wax on the base, you don't need a lot.
Run the iron tip to tail very slowly over the base, applying a slight upwards pull on the iron. Do not leave it in one place as it will burn the base. Evenly spread the wax. Do not heat to the point of feeling more than a little warmth on the tops. If the wax is smoking the iron is too hot, turn it down. If the wax isn't melting the iron is too cool, turn it up. Easy way to set iron temperature.
Two passes like this, the first has to be slower to melt the drops of wax. Third pass with fiberlene between the iron and the base.
Remove wax from the edges with a plastic scraper before it dries is a little easier than later.
Let the wax dry for at least ½ hour, or overnight or longer.
Use a very sharp plastic scraper (sharpen often with a panzar file and/or burnishing tool - or an electric sharpener.)
Moving tip to tail in longish strokes remove as much wax as you can.
Wipe off loose wax shavings with a paint brush.
Use a brass brush tip to tail to remove any remaining wax.
Wipe off loose wax shavings with a paint brush.
Use a horsehair brush to finish wax removal and to polish the base.
Scrape off any residue from the edges and sidewalls.