Follow these steps to create your Jack-o-Lantern Sandwich Bites:

1. Prepare the Cream Cheese Mixture: In a mixing bowl, combine the softened cream cheese, mayonnaise, garlic powder, onion powder, salt, and pepper. Mix until well combined and smooth.

2. Spread the Mixture: Take four slices of bread and spread a generous layer of the cream cheese mixture on each slice.

3. Layer the Filling: On two of the slices with cream cheese, add a layer of shredded carrots, diced bell peppers, and avocado slices.

4. Top with Additional Bread: Place the other two slices (cream cheese side down) on top of the filled slices to create sandwiches.

5. Cut into Shapes: Use a cookie cutter or knife to cut each sandwich into a round shape. Then cut out a pumpkin face (eyes, nose, mouth) on one side of each sandwich.

6. Decorate: Add black olive slices as eyes and mouth to give your Jack-o-Lantern a cheerful or spooky look.

7. Serve Immediately: Arrange your Jack-o-Lantern Sandwich Bites on a serving platter and add lettuce leaves for garnish.

These simple steps make creating the Jack-o-Lantern Sandwich Bites an enjoyable activity for cooks of all ages. You can adjust the fillings based on your preferences, adding or replacing ingredients with your favorites.