Coming up with an innovative idea will require some methods of generating ideas from brainstorming to mind mapping that can help conjure up useful ideas. During this process one must make sure to keep focused on a goal. If you have no goal, how will you know when you have reached the finish line and are ready for refinement? Start out with a few thoughts or themes and see what you can come up with.
Don’t get stuck on trying to come up with different variations of the same idea as you will want to develop ideas further later. While there is no exact path in ideation or other creativity techniques from start to finish, creating an idea you are happy with and feel has innovative potential is the key. Believing in your ideas innovative ability will give the confidence you will need later on during pitch time.