I am an experienced programmer with over 3 years' experience in Game Maker: Studio. I have a broad knowledge of all aspects of the program, and am proficient in GML. I have made all sorts of games, such as platformers and arcade games (even Tetris!) What kind of game are you hoping to make? I am more than happy to prototype the game for you for free, so you can see I'm capable. I hope to discuss this further with you over chat.