How do I prepare my multistage rocket for flight?

Most Estes multistage model rocket kits come with specific instructions to follow. However, the following are general multistage instructions: *Note—the bottom of an engine is the end where the nozzle is located.
Use cellophane tape to connect the top of the booster engine to the bottom of the upper stage engine. If needed, wrap masking tape around rear of upper stage engine and front of booster stage engine to friction fit into the engine mount. Push upper stage until it stops against engine block and fits snugly.