Help From The Community

I noticed that thinner leathers stretch way easier than thicker/tougher leathers. With that in mind, do you burnish the entire surface before cutting or not? Even when I use rotaty cutter or thin/sharp blade to cut the leather, sometimes it stretches 1-2mm in the process or working with it. With some projects that would be a negligible allowance but with some it will look uneven. What is your approach when working with thinner leather? Thanks!