Last night I dug through my crap and found an old miter saw and a coping saw, but the blade was broken.
I had a scrap piece of 1/2" poplar, so I clamped it into my workmate and got to work. I really wanted to do it the way Paul does it with the coping saw for the flat cuts, but I had to use a chisel for that part instead.
My 2nd attempt was with a piece of 3/4" pine. I actually had more trouble with the pine than I did with the poplar. I had a harder time keeping the sides perpendicular, and the chisel had a hard time removing the waste.
Here is what I learned:
The process is very straightforward and easy to learn, but one has to do it enough to be able to make clean dovetails that fit nice the first time.
Poplar, while not being as hard as many hardwoods, is still much harder than pine.
My miter saw sucks. It kept catching, and the handle does not hold the blade straight.
My chisels are dull.
I need a blade for my coping saw.