What's wrong with my Site/Theme?

So i downloaded a wordpress premium theme and I am having a few issues. First I tried installing the theme files into the root directory in the hosting but the theme would never show under the listed themes.

Next I decided to just edit everything on an exisiting theme I had previously installed, what I did was delete all the files from a theme called Monster and inserted all (I think) of the correct files for the theme I am trying to used called Huex. Now my website looks like the whole theme was not installed properly, but I am not sure where I made the error. Please take a look at my site here . http://www.cocoadough.com

Where did I mess up and how can I have my theme look correctly as it should. Here is how it should look… http://www.wpnow.com/demo/#huex

Someone please tell me the steps I need to go about to fixing my theme on my site. Thanks.