In Australia, when you have a car older than 3 years ( or is it 5 years ) every year you have to re new your car's registration, which involves a mechanical and safety control, now big open gashing rusty holes are a safety issue ( you try living near the beach and not get rust on your car ) So nearly every australian has had a go at "putty-ing up" or " Bogging"  the holes of rust to pass the control and get another 12 months to drive your car. Now I had never really done this before, and Jacqui was in there in a heartbeat, keen to prove how good she is
Jac's technique involves putting some newspaper and chicken wire inside first, so it the putty mix will hold plus you don't end up wasting a whole can on filing the insides
Then she fills it up, and the trick is to so as smooth as possible to minimise all the sanding work once the putty has gone hard, and a good mix starts to go hard in 15-20 minutes, so it's not like you got all day to try and smooth it
putt putt putt putting away

bit of backlit putty work, all done with a smile of course
and voila, a few days later and new car registration, Jac's the panel beater with finished product

now I bet you are not as lucky as me to have a girlfriend that can do that for you

:-)