CGTrader – a CG artists community with over 1.2 million users, has started the Digital Art Competition, which invites all CG artists (both 2D and 3D)!
There are no hard requirements, and artworks do not have to be created exclusively for the competition, so feel free to show everyone your best and favorite works. For more details, visit the competition page and be sure to check out the Categories & Prizes section!

Submit your best artworks to the following corresponding categories of CG art: Character Illustration, Character Concept Design, Environment Illustration, Environment Concept Design, Object Design, and Object Concept Design. All submissions will also have the chance to win the Public Award.