@Cash68847 You're right that the basic technique for briskets is the same as for pork butts. The real difference is that pork butts are a hell of a lot more forgiving than briskets.
The number one mistake that people make with briskets is that they think of it like a big steak. "Cooking it less makes it more tender!" OH SWEET FUCKING JESUS NO. Cooking a brisket is nothing like cooking a steak, and with that mentality you will never make a good brisket.
You're on the right track with that basic process. Wrap it when the temperature has mostly stalled, maybe 160-170 or so. I usually take a brisket to at least 200, but the feel of the brisket is the real measure of when it's done, not the temperature. When it gets to maybe 195 or so, start poking different parts of it with a thermometer probe or skewer to test for tenderness. It should go through with very little resistance, like you're poking into a cake or something. Often the last part to finish will be the part of the flat that overlaps the point - your brisket ain't done until that part is tender. (This assumes that you didn't separate the point to make burnt ends.)