Wood joinery is one of the most fundamental concepts in woodworking. Why did you join them together in that fashion? Here’s a list of common types of wood joints and some examples that may help you when deciding how to build a pallet craft.
Finger joints provide face- or edge-grain gluing surfaces to end-to-end joints for a stronger glue bond.

 15 Easy and  best ways to make end-to-end joints that hold

 How do you attach pallet boards together?

Note: This is not a detailed tutorial on how to do the wood joints, as some are more advanced techniques. Instead, this is just a tool to help you identify the common of wood joints you see in builds and hopefully give you ideas for your next project.