Welcome to the Q&A Forum

I agree with Sha that your 404 page has a nice appearance. My main concern is it lacks functionality. If I click on a link to your site and end up on that page, what is my next action? Likely I would hit the <back>button on my browser and leave your site. It is either that or typing a URL.</back> I recommend you offer users the option to stay on your site. Your site navigation, a search box, some links, anything would be helpful.