When you write your proposal, you must make sure that your technology is well explained and that your explanation is not too superficial. This is difficult since the proposal has a page limit but the evaluator must see that you and your team have put a lot of development efforts into the project and that you are experts in your field.
My writing tips for the technical side are:
- List every hardware/software feature in detail and explain why it is important
- When compared to competing technologies, always state why yours is better
- List all milestones that led you to the current stage and do not simplify too much