Thaw your frozen shrimp (You can simply run your frozen shrimp under cool water.)
Then place it in a freezer bag with your marinade or dressing and put it in your refrigerator. It will be ready the next day for your salad or for the next couple of days.
I made a super one right here, cilantro lime dressing.
http://realadvicegal.com/cilantro-lime-dressing-recipe/
You let it sit overnight for your salad. Then you place your shrimp in a bowl with the marinade/ dressing while you making the rest of your salad.
Once your shrimp has begun the marinade process or after you have pulled the shrimp out of the refrigerator begin to plate the washed salad.
I usually slice my cucumbers in half.
Then cut the avocado in half. I remove the seed but I leave on the skin. It will help create a bowl for my easy shrimp recipe.
Place the shrimp into the avocado.
Place the avocado on the salad.
Take the remaining marinade or dressing and put it on top.
Serve the salad.