Maybe this is a bit late
..
Your best bet is to get a copywriter as suggested but you can do it yourself.
Firstly remember your website is not created for you but for your customers or potential customers. You must first understand them to be able to speak in their language. You need to do a market analysis and a brand analysis. Speaking to all types of people is impossible, so you got to "home" in on your target market and speak in their language. Your catch phrase and content must keep them interested and coming back for more and by understanding them you can achieve this. So it's hard for anyone to suggest wording or phrases. Your content have to contain keywords for your website for SEO (search engine optimization). There are many free books and material on the web to help you do a simple brand, market analysis and SEO.
A real example we worked on recently to give you an idea:
A fashion designer wanted her own website. We interviewed her customers and herself. We looked at similar websites, what worked and what didn't work on those websites. In the end we come up with an idea which the client loved.
"Look Amazing, Feel Amazing"
Most people who go to a fashion designers want something different, unique and special because they want to look amazing on that special day or at that special occasion. Actually their want to feel amazing. So in that phrase we capture the type of business "look amazing" with the feeling that customers are looking for "feel amazing". All our content and phrases centered around this idea. So it's not just about thinking about a catchy phrases, it needs to speak to market.
Hope this helps.