Cook and crumble the breakfast sausage in a medium skillet. Set the cooked sausage aside on paper towels to drain any excess grease.
Leave the skillet on the heat and toss in the tortillas to let them get nice and toasty warm on one side. Set the tortillas aside and return the skillet to the heat.
To cook the eggs you have a couple of options. You could add the oil or butter to the skillet you’ve been using and then cook your eggs. My preference is to use another smaller skillet for the eggs because it makes them prettier. So heat a small skillet over medium heat, add the butter or oil, and then cook your eggs - scrambled, fried, it’s your preference.
Toss the beans in the hot skillet you used for the sausage and tortillas. This just lets them heat up a little. Only move them around in the skillet for about a minute.
To build your tacos place one egg on each tortilla. Top each egg with 1/4 of the sausage, then beans, and then cheese. Add your pico, sour cream, and avocado and serve immediately.