Create a Fantastic Photo Gallery/Sales Website

I have currently a photo website [login to view URL] it needs something extra to really up the presentation and marketing value of this. I want to add more value being able to present and show off professionally my photos (personal/project/commercial images) I want the best way for it to be able to make images look their best I want to be able to sell images (portrait/landscape/creative) and have ways of getting my images so they can sell and for me to make some money. It is only a 'hobby' website at the moment and needs a lot more ideas to really make it have more 'value'. i want the best ideas to make this have a real commercial value as well as be a platform for my good photos. I need this website to be able to have a high 'hit' value or that from around the world people will want to get on the website. For the website to have gallery, purchase images, and links to exhibitions.