I can't absolutely guarantee that your food will look this beautiful once you're done with the recipe, but hey, if it tastes good, no problem and everyone will love you!
Anyhoo, here's all the details:
In a medium bowl, whisk together 1/3 cup mayonnaise, 2 tablespoons chopped fresh summer herbs (tarragon, chives or basil), 1 teaspoon red wine vinegar, a pinch of pepper and a pinch of cayenne if you like a little more spice. Using the flat side of a knife, smash 2 chopped cloves of garlic with a pinch of salt, then whisk this paste into the mayo mixture. Stir in 8 ounces of lump crabmeat 1 1/3 cup chopped celery. Divide the crab salad among 4 pitted avocado halves, then serve to your friends.