Arrange the fruit in a pattern. This will make the tart feel more formal. Or go completely random for a natural, organic look.
Add movement. Position strips of fruits like mangos and pineapple on their sides to create wave-like ribbons.
Go for height. Don’t lay all of the fruit flat; try standing some on end. Cut a kiwi or peach into chunks instead of slices.
Slice the same fruit different ways. For example, leave some raspberries whole, slice some lengthwise, and others crosswise.
Show the fruit on different sides. Show a strawberry rounded side up as well as cut side up, for example, to demonstrate different textures.
Create rosettes with thinly sliced fruit (here’s how).
Use garnishes to fill spaces and add texture. Stand chocolate shards upright for a spiky look, or add whole herb leaves or edible flowers for color and whimsy.