I love paper piecing. The best "tip" I can say is to baste (using a 4.0 stitch length) the first time or two to get a feel for how things work. I often would end up with an irregularly shaped piece looking right to my brain, then after stitching, found out it didn't quite reach where/how I thought it would.
The other version of this is to "pinch and peak" to see if it will fit. You pinch the fabrics together along the seam, then flip while holding and test to see if it will fit. Not as exact as basting, but no seam to rip out if it's wrong.
Good luck and enjoy.
I think it's good for our brains to learn to look at things in a new way.