THE 5 RULES OF MAZE DESIGN:
These 5 rules apply to any maze you make so we start with them !
1. Always keep an open pathway for the solution
While drawing a maze you will need to juggle multiple open pathways each of which could become the solution. One of them will become the solution. Keep track of it. This is especially important if you are designing pathways in both directions (from the start and from the goal).
2. Clearly mark the start and goal, or the objective of the maze
A maze should have a start and a goal that you can assess just by glancing at it. There are many ways to start and end a maze I review in this blog post: Options for Starting and Ending a Maze
3. Ensure the difficulty matches the intended audience
Most people want to solve a puzzle/maze that is just slightly below or slightly above their skill level. Many things help determine the difficulty of a maze. Size, number of branches, the length of dead ends, the number of choices, the complexity of the rules (if the maze has them).
4. Ensure your maze has a solution
When your maze is complete, solve it to determine the difficulty level and to ensure it is a real, solvable maze. Depending on the complexity of the maze you may want to do this right away or wait so you can properly assess the difficulty.
5. Explain anything that needs explaining
Some mazes have rules or conditions. Explain them with directions. If it isn't obvious, make it so.