Dear Aparna,
What you are asking for is usually a topic for a 3-day training course or a 200-page book.
No, I am not trying to fob you off. Just iterating the enormity of the task - if you're really interested in creating a compelling and effective proposal - not like the 95% of horrible and useless proposals floating around currently.
From the sound of your post, it appears you want to showcase yourself and get empanelled with institutions and/or training vendors.
* My suggestion is to read 2 or 3 workbook-style books on 'Business Proposals' or 'Consultant Proposals'. There are a number of good e-titles on Kindle Store at Amazon.com: Online Shopping for Electronics, Apparel, Computers, Books, DVDs & more (if you have a Kindle reader or Kindle app for iPhone, iPad, or Android). While there are a number of books on Kindle Store, make sure you only pick those that have attached templates.
* An excellent resource is Business News & Strategy For Entrepreneurs | Entrepreneur.com. These guys publish the world-renowned Entrepreneur Magazine and have a treasure trove of useful and customizable templates for a whole variety of purposes. Another similar resource is Inc Magazine (Small Business Ideas and Resources for Entrepreneurs)
* Another excellent resource is the LinkedIn group - On Startups - this is a Dharmesh Shah enterprise and is brilliant for document templates.
Remember - you are NOT writing a Training Proposal. This is only written where a vendor has been in talks with a client who now wants a written proposal with the vendor's commercial terms of engagement, etc.
What you are writing is a BUSINESS SALES PROPOSAL.
And, this is perhaps the MOST IMPORTANT document you will EVER write. Any other document you write will be BECAUSE of your Sales Proposal. Believe me - I cannot emphasize this point enough.
So, please don't copy and paste someone else's proposal unless you can lay your hands on one from the Big-4 Accounting Firms, the Big-7 Consulting Firms, or one of the ET500 companies.
These guys spend tens of lakhs of rupees perfecting their Sales Proposals. At least they're worth copying and pasting - with the appropriate customization, of course!
I was in a similar situation about 2 years ago. Initially, I did the copy-paste thing. And, it was Horrible! Since then, I followed the above steps and also bought the hard copy of this book Writing Winning Business Proposals: Your Guide to Landing the Client, Making the Sale, Persuading the Boss: Richard C. Freed, Joe Romano, Shervin Freed: 9780070219250: Amazon.com: Books
It took about 3 months to get the proposal that WOWED recipients, and I was able to book meetings.
Yes, it did cost money and time, but it was totally Worth It!
So, my reply is from personal experience and journey - not some theoretical gyaan.
Good luck, Aparna!