re: TIPS ... for precision cutting

Precision cutting require you fine tune your tools first. Be it hand tools or electric tools, if they are not cutting correctly your are not going to cut precisely.
Every couple of months I clean my tools, clean the saw blades, router bit I used.
Check to make sure the table saw fence is square to the table top and parallel to the miter slot
I make sure the drum sander drum is still parallel to the bed etc…
Every time I get in the shop, the first thing I do before using my table saw is to check for square.

One thing that is most often overlooked is the "squareness " of our square. Most of them are actually out of square. I went through 4 square before finding one that is square along the entire 6" length. Most of them are square the first couple of inches.
Yes I am lucky my woodworking teacher is also a machinist. He helped me check the squares.

The other think that comes to mind is preparing the stock adequately before cutting.

Do I follow that all the time? No. Many times I rush and it shows:)