There is new star on freelance sky where you can sell your Graphic Design and skills with Photoshop, Illustrator, InDesign... Microlancer is under Envato umbrella and gives pretty good opportunity for freelancers to offer service(s) and earn some money. You can read more about key benefits from here. To become service provider you must submit application and from my experience you will get answer pretty quickly: within 48 hours.
After you are approved as service provider, next step is to edit your service: to describe it and to upload examples. Here are available categories you can specify: Art and Illustration, eBook Design, Image Editing, Logos & Branding, Marketing Design, Presentation Design, Print Design, Social Media, Web Design and UI, App Icon Design. Price is all yours (within defined range) with fee of 30%. Last step is to submit your service for review, wait to be approved and you are up and running!. See you there.
Interested to sell digital content ? Read this: Where to Sell Online Digital Content for Adobe Products.