I pull dashes as part of my job. That's a BMW X5 dash removed for a passenger airbag replacement.
Here's some tips:
1. Get a manual. Haynes, Chilton, Clymer, Ford, it doesn't matter. Having step-by-step directions helps a ton.
2. Take pictures. Smartphones are wonderful things. As you take things apart, take pictures. It gives you a reference for reassembly.
3. Stay organized. Magnetic trays, ziplock bags, masking tape and a sharpie... These are all your friends.
4. If it doesn't come out easily, double-check your work. If it's hanging up on something, don't keep trying to jerk it loose. Use a mirror, a flashlight, an inspection camera, whatever you have at your disposal to see what's going on.
5. If possible, have a helper. Dashes are wide and bulky, having someone on each side makes it much easier.