Using just salt, pepper and garlic, it looks like you have enough on there. I don't use much seasoning on my brisket. I like the way it should complement the brisket and not overpower it.
Team: Pyle's BBQ; Yoder YS640; Good-One "Trail Boss" 60T; Homemade rig; 22" Weber Kettle w/rotisserie ring; Big A$$ Rotisserie; BGE-Small; Weber Kettle Gold, Weber OTS, New Braunfels offset smoker.
Saddles BBQ Bistro