I thought I had this up here, but apparently, I only had it posted on Snark Free Waters, so I figured I might as well post it here, too.
The Ron Frenz Rule of Costume Design is a simple one. Don’t design a comic book costume too ornately. With every costume you design, always do so so that, if Ron Frenz were ever to draw it, it would look cool.
This is NOT meant to be a knock on Ron Frenz at ALL. His style is just geared towards simple designs, not ornate ones.
Therefore, if he can make your costume look basically the way you designed it, then you passed the test.
Examples of costumes that FAIL the Ron Frenz rule of costume design include the alien War Machine armor, a lot of Iron Man armors over the years, Metamorpho during Gerry Jones’ JLA run (that’s a slight exception, as it did not look good in JLA EITHER), Jericho’s costume, Namorita’s current look, etc.
Feel free to mention any costumes that you think break the rule!