In a glass pie dish, layer the beans and salsa. In a small bowl, mix 1 cup of the sour cream (reserve 1/2 cup for the spider web garnish) with 2 tbsp taco seasoning. Layer this on next, followed by 1 1/2 cups of cheese. Add a layer of tomatoes, sliced olives, and green onions (reserve a small amount of each to garnish). Top with a smooth layer of guacamole. Put the remaining sour cream in a pastry bag or Ziploc bag with the corner snipped off and use it to create a web design. Add an olive “spider” and garnish with the remaining cheese and some tomatoes, olives, and green onions. Serve with tortilla chips.