Unless you know your ideas are or might be faulty you can't even begin the search for better ideas. Too often the shortage of resources as interpreted as a shortage of money. The resources needed for new ventures are often available in the market only at prices that are un-affordable. New ventures always have to borrow, beg for, or transfer, resources from owners to the new venture entity. The proposal should be well advanced before the stakeholders begin to ask outsiders for money.
Resources are always scarce.
That's not very helpful. To be more successful it's useful to understand in which areas the project is being most starved. That understanding may allow you to give attention to the right problems.