Crafting the Rainbow Pasta Salad is a breeze if you follow these simple steps:

1. Cook the Pasta: Bring a large pot of salted water to a boil. Add the tri-color rotini pasta and cook according to the package directions, usually about 10-12 minutes until al dente.

2. Prepare the Vegetables: While the pasta is cooking, chop your cherry tomatoes, cucumbers, bell peppers, red onion, and olives if using. Make sure all pieces are bite-sized for ease of eating.

3. Drain and Rinse: Once the pasta is cooked, drain it thoroughly and rinse under cold water. This stops the cooking process and cools the pasta.

4. Combine Ingredients: In a large bowl, combine the cooked pasta, chopped vegetables, corn, and olives.

5. Add Dressing: Pour the Italian dressing over the pasta salad. Stir well to combine all the ingredients so that the dressing coats everything evenly.

6. Seasoning: Taste your salad and season with salt and pepper as needed.

7. Feta Cheese: If desired, add the crumbled feta cheese and gently mix to incorporate without breaking the cheese too much.

8. Chill: Cover the bowl and refrigerate for at least 30 minutes before serving. This allows the flavors to meld beautifully.

9. Serve: Take the salad out of the fridge before serving, and give it a quick stir. Garnish with chopped fresh parsley for added color and flavor.