Got this shot about a month and a half ago near Mt. Rainier National Park.

I wouldn't call that "over processed", I'd call it "awesomeized"!
Your attachment doesn't open. Where are you trying to post from.
Xstep, how far from Joshua Tree do you live?
Very nice work posted here!
Melissa;
Nice images.
You've also got M31 and the 7 sisters in the "Milky Way (and an airplane trail)" image.
What lens did you use?
My UWA f2.8 11-16mm Tokina is so easy to focus on infinity, however for my Canon general wide zoom lens with variable aperture focusing was a trick indeed. I have the 15-85 and also the 18-135 lens.
For either of those, I'd go live view 10x, focus back/forth till as sharp as I could get on the brightest star in real time (crank up the ISO to 6400 so can view it, then move it back to imaging setting), then I'd put the lens in manual mode and shoot away.
I tried a bit of astrophotography for the first time last night. It was pretty frustrating getting the right focus, and my lens kept fogging. Live and learn I guess.