Whether you're working directly for the client or are awarded by the client in a crowdspring project, you'll need to present the client with logo design proofs.
We created a common proof template for logo projects and we encourage each designer to use it. It will help clients to better understand colors and variations on the logo, and will help you create professional proof files.
You can download an Adobe Illustrator copy of the crowdpring logo design proof template here.
Here's how the template looks: