On a flat surface pat the steak dry and season heavily on both sides. Seasoning should go in this order: Salt, Pepper, Garlic, Cumin, and then Chili Powder.

Preferred (But Optional): Refrigerate for 4-12 hours. 

Remove steak from fridge and let come to room temp.

Grill Method: Heat grill on HIGH, cook 5-6 minutes per side, until the steak reaches desired temp. My favorite is 130, medium rare. Up to 140-145 for medium.

Stove/Oven Method: Preheat oven to 300 degrees. On the stovetop, heat a cast iron or grill pan on high heat. Quickly sear until you get a nice color on both sides. If the steak hasn't yet reached temp. put in your preheated oven until it reaches the desired doneness.

Let rest 10-15 minutes before slicing.

Now use the steak along with your favorite toppings and wrap in a warm tortilla!