.
That link with the drum is way better looking than my ready set go method with an angle grinder.
To be fair, once I actually worked out the best way to hold it, I can whip out some decent wheel wells now quite easily, but these early ones were pretty bad, from this post a while back.
Less is best in the wheel well department, so making the wheelbite marks and then just cutting directly in that line is best, not trying to take out a big scallop like some other pro boards have.