That Parrot has good advice!
Some other things that might help:
- When you hit the strings, really push into them a bit, almost like you're punching with your thumb and index finger that are holding the pick.
- I prefer heavier picks these days, like the Dunlop Ultex 1.4 and 2.0. They make it easier to muscle the strings around.
- Tonally, using something with a mid boost in front of your amp like a tube screamer set with high level and gain to taste can add a metallic edge to the sound that really gives some nice definition to the sound. When I first started using modellers, I struggled with high gain sounds until I learned that trick.
What kind of guitar and amp are you using? IME it's much harder to get those sounds out of a single coil guitar than one with humbuckers, but a compressor and boost can help level the playing field a bit.
Good luck with the audition!
Edit: or rather, how did it go?