Whisper

It is a marketplace where visitors can post jobs in the form of gigs, and thus easily connect with sellers or freelancers. For example, a buyer can post a gig with the title "I search for someone who can walk my dog for 7 days" and thus offer a short job; people in the vicinity can then take on this job.
As you say, the first rule on selling is: Find your Buyer first and work backwards, based on what they want.
Most people do it wrong. They create a product and then they go looking for someone to sell it to. Lining up the sale first is often the difference between hot commodities and junk.
That‘s why we had the idea to create a marketplace based on backwards selling. Meaning, sellers already have a ton of buyers, and buyers can easily find sellers that perfectly suit their needs.

Our target audience are mainly freelancers and especially teenagers, to give them an opportunity too to earn some money through side-jobs online or in person in their vicinity. Also businesses or clients who search for creative and motivated people for their business.

Because this is currently a business idea, the first challenge is to build up a team, with the same vision as ours, and to get funded through Venture Capital Companies or interested Angel Investors. After these steps, we are ready to build up.