Once you have identified the festival of your choice, take a good look at their website and understand their rules thoroughly. Make sure that your formatting is in line with whatever the guidelines require. If the panel provides a template for submissions, proposals that don’t follow it may be thrown out.
As for the content, efficiency and persuasiveness are key. Festival organisers must go through a ton of proposals each year to make their selection. It is a good idea to assume that they will be busy, skimming your words in a rush, and not inclined to grant any special consideration.
Therefore, get straight to the point by starting with a firm introduction. Make the issue as relevant to the festival as you can, tying it to their interests or goals. Make it specific to THEM and avoid relying on a generic appeal to emotions or values.
The right language helps, too. Make your proposal as purposeful as possible by refining your tone to meet your audience’s expectations and write in plain, direct language, avoiding unnecessary jargon and complex language. Your ideas are more likely to be approved if you can communicate them in a concise and engaging manner.