Everyone has their own ways of making them, including what seasonings they like to use, but I thought I would share my recipe and hope you like it.
First thing I do is cook the ground beef and chorizo sausage. I use about 2 1/2 lbs. of the ground beef and one tube of the beef chorizo. I don't use packaged seasoning any more, and much prefer the flavor of the chorizo to anything else. It also comes in pork, and even vegetarian!
Meat, cooked and drained.
A bit of lettuce, tomato, and onion...
I start with the beans, then meat. Sour cream and onion; lettuce, tomato, and shredded cheese. I like to add some chipotle peppers in adobo sauce, as I do like spicy things. Last thing to do is to roll it up and that's it!
There's often enough leftover for another meal, so all you need to do is put the meat and beans in containers and keep them in the freezer until you're ready for them. We also like enchiladas, but that'll be a recipe for another day. :)