Firstly, writing a research proposal is not easy, or I should say formulating the research question is a difficult proposition. I started this process several months ago with just a very basic outline of what I was most passionate about in Film production (Documentary) and then the hard work began. I had this idea about a question that only the production of a documentary film could answer and be accessible to both academics and the general public. Getting started, have a plan, which again takes thought and is definitely worth doing before starting to research your chosen subject. For example, my plan and initial research centred on identifying the institutions that supported a PhD by practice and in my chosen field, that is Documentary Film. After identifying the surprisingly small number of institutions that could possibly support my studies and supervise my PhD project, the next step was to find a supervisor.
Supervisors. Finding a supervisor for your project can also a great way of talking to specialists in your chosen subject, gaining knowledge and assistance in producing your research proposal. I was fortunate to find a number of potential supervisors through their University staff pages. I think it is important to follow up any exchange of emails with a telephone conversation and possibly a meeting to discuss your project, I certainly did both of these.
Note. Beware of writing your proposal to fit others, I do not mean the format or general guidelines as such, but I mean the subject itself. It is too easy to divert away from your chosen subject and the essence of what makes studying for a PhD passionate to you by making the proposal fit another project, or for an institutions requirements. Fortunately the institutions and supervisors I contacted in the main, were totally onboard with my proposal and I was grateful for all the assistance I received in focussing my proposal before submission.
There are any number of guides available online with templates for writing your research proposal and in fact many of the institutions have application forms for you to download. examples can be found here:-