As I have very little experience of dealing with bank managers, and the like, could someone give me an idea of how to produce an attractive business proposal to help me get on my way with the next stage of my flying that is almost guaranteed to have me walking out of my local HSBC with a huge wad of £££ (ok maybe not a huge wad but at least the £££ in my account

)
I.e. how to set it out, what to info to include etc etc. I would be most grateful.
Done a search but can't find anything on here about it.