Put your bread on a cutting board or solid surface, cut off crust, and using a rolling pin, flatten it.
Place it on a piece of plastic wrap
Put a slice of cheese over bread
Mix together the tuna, lemon, and dill, then add salt and pepper to taste preference
Spread over bread/cheese, leaving about a cm on one end uncovered
Put a line of carrot matchsticks (about a half cm wide) down the bread
Next put a sandwich stacker pickle next to the carrots
Feel free to add other veggies if your child likes them: pepper slices, cucumbers, sweet potatoes all make great additions
Roll into a sushi roll using the plastic wrap to help
Slice into pieces
Serve