For the tostada:

• 12 tostada shells
• cooking spray

For the shrimp marinade:

• 2 tsp chili powder
• 1 tsp cumin
• 1 tsp oregano
• 1 tsp garlic powder
• 1 tsp onion powder
• 1 tsp salt
• 1/4 tsp black pepper
• 2 tsp olive oil
• 1 ½ lb raw peeled shrimp

For the guacamole:

• 2 avocados mashed
• 1/2 small bunch cilantro minced
• 1 tsp minced garlic
• juice from 1 lime
• 1/2 tsp salt
• 1/4 tsp pepper

For the pico de gallo:

• 3–4 tomatoes seeded and diced
• 1 tsp minced garlic
• 1 jalapeño pepper minced
• ½ medium red onion minced
• 1/2 small bunch of cilantro minced