Okay. Right now what you need before you can
approach investors is:
1) The format is it being shot on.
2) The entire line item budget.
3) The intended market and distribution plan.
4) The ROI you are offering.
5) The funding you have in place already.
6) The names involved in the project.
7) The bios of anyone involved in the project who
has successfully taken a film to market and produced
a profit for investors.

A list of existing feature credits your primary team
has -- ie writer/director/producer.
The fewer of these thing you have, the more difficult
it will be for investors to take you seriously.
Especially in Greece where the government usually finances
films. Investors are going to ask why you aren't going to
the film commission for money so be prepared to answer that
question, too.