Make Art for a 2D Game

Hello Everyone, I am making a 2D Android game. Its a game like Mario , a level based adventure game . I am looking for someone to create the Graphics for this, I need an Artist who can make GUI , And gameplay Graphics . I will provide you with a complete list of all the Assets required for this game, But for now you can look at "Buster's Boost" to have an idea about the scale of the work and Quality i am expecting . Please Mention your previous works and Portfolio in your Proposal, Thank You,