Why do you want to go on the show?
Is it for marketing and P.R or are you looking for capital? Ether way to be successful you will need to have a very clear strategy and offering to achieve your desired outcome.
From a business / financial perspective here are some basics....
#1 Is your product or service proven (do you have solid income? and forward orders)
#2 Expandability how large is your potential market?
#3 Speed and Ease : How quickly and easily can you potentially tap those markets?
#4 What do you want the funding for? How will an ejection of capital really multiply the value of you business?
#5 What is your point of difference in the market, what blocks or makes it difficult to compete with you?
#6 How strong is your brand / branding icons?
#7 What is the REAL risk in investing in your business?
#8 How do you justify the valuation of your business and what is the real projected value of the company?
#9 How clear are you on your marketing message / story : why are you doing this, why this product / service? Is this "story" something investors / consumers will buy?
Finally don't even both trying if you don't know your numbers and financials, people don't just back business they back people, if you are not solid in your business they won't invest there money in you or your products / services.