How can I make my simple flyer more appealing?

Many people, like me, look at those posters and assume they are a scam. We think they are a scam because they don't tell us anything at all about how we will make the money. Is it selling memberships, phone work, door to door sales, what? And the high $2500 claim just screams scam from a street sign. I would lower the income claims and at least hint at what the people will be doing to make that money. Something like: use your sales skills, or people skills, or no cold calling. Tell them something that will ease their suspicions because most of us have seen such signs and they are usually either pyramid schemes (illegal) or nothing like what they promised. What is the work, anyway?