You better write a one-pager with a short idea about what's the project, how will it work, and why you think it's going to be a big project. If some investors find the idea is solid and there's a chance of flourishing the project in the future, they may decide to invest. It's not something they will reach you for just because you said it's going tom be a huge project. This is not how people look for investors of course. Bring the details to the table, I'm sure, you with an interesting ideas, will be able to reach the right guy. Otherwise, you will not be able to attract a single investor I think.