This is a logo I painted at my old instructors school. I started by drawing it with a pencil and taping it off.
Step 1: Paint One Color
Then I painted the red inside first.
Step 2: Paint the Out Line
I painted the black outline with a space away from the red.
Step 3: Extend the Color
I extended the red to the line.
Step 4: Clean Up
I gave it final touch ups.
Step 5: Finished
Here it is finished and you can compare the size to the trainees. It's about 5 foot in diameter.