@korneisgibnev098 I believe to set the margin when Baking: if you look at your picture on the right menu there on your Render Settings: Look under the “Bake” drop-down you should see the “Output” Sub-Drop-Down and then the Margin. Looks like yours is set to 16 px. Is that what you are looking for?
Clear Image check box is also handy if you need to clear it off for the next bake
