In a large pot saute onion, bell pepper, and celery in butter until soft
Add in garlic, paprika, thyme, oregano, and cayenne - cook for 2 minutes
Stir in broth and add in bay leaves
Bring to a boil then simmer for 10 minutes
Stir in tomatoes and worcestershire, simmer for 10 minutes
Add in cooked shrimp and cook until hot
Remove from heat, stir in lemon juice
Season with salt and pepper, serve over rice, garnish with green onion, and enjoy!