Combine cream cheese, sour cream, and cocktail sauce. Stir until smooth. Add green onions if you like them. If you are using the shrimp it can be mixed in at this time. Spread the mixture on tortillas. If you are using the crab sticks they will be rolled into the center of each roll up. You will need 1 ½ to 2 per roll up depending on the size of your tortillas. Once you have them rolled up wrap each one in plastic wrap. It is best if they sit an hour before serving. These can be made a couple days in advance. Slice in 1/2 to 1 in. slices. You can serve it with a dot of cocktail sauce on top of each one.