Where can you find a video game designer looking to buy original music for a new game?
Try looking in websites that either deal with video game music, or video game design. Ocremix.org is a great site for freelance musicians. Their work is not bought or sold, but I happen to know for a fact that people in the game industry keep their eyes on that site. Gamasutra.com is a great site for designers and people in the industry, but I'm not sure if purchases or deals take place there; I'm not familiar enough with the workings of the site.
Also keep in mind that a designer might not want to buy your music: would you rather buy a computer from some guy off the street, or from a place like CompUSA or BestBuy? Likewise, if you're unknown, even if you're good, there are still legal issues to iron out before anyone might buy anything from you, especially if your work is copyrighted (which it should be).
The ideal thing would be to actually get a job in a game company and get paid for your efforts.
Lastly, don't neglect the power of networking. Get to know some people in the industry, and spread word around that you're looking for someone wanting to buy your compositions. This might help you get your foot in the door, which is not easy, and nothing to sneeze at.
There are not many skills needed, but you do have to have experience playing video games. ^ The last answer to this question is completely bogus. You need a lot of skills for it. To be a video game tester is experience playing video games. The question is "What skills are needed to become a video game designer?" NOT "Are there any skills needed to become a video game designer?"
I'm under the impression that hot topic had one but they no longer do. The original dress worn in the Helena film clip was made by a designer called Renee. The girl who i found the website off said that it would cost about $250 for the designer to recreate it. If you're not looking at paying that much i suggest finding a similar dress and altering to suit what you want.