I like the design layout of your site, but there's a couple of things that really throw me to be honest.
I just don't 'get' your blog at all if I'm being honest. It doesn't read as a blog very easily, and it has quite large Facebook and Twitter banners daubed across it, which almost look like adverts. Personally, I would try and address this, and make it a little more personal and inviting for people to read. You actually don't say much on it either, and a blog should really be stuffed full of super fresh content to come and help all those lovely Google bots to come and find you regularly
Your front page photos are very large which means people have to scroll down to see any copy on the page, and the current copy doesn't make complete sense. You also use the letter 'i' where 'I' should be used, eg. "i love the way i can look back and view a moment in my life."
I think you need a 'proper' email address not an @sky.com address, something like info@ or sales@ or photos@ carlomullenphotography.co.uk. You own the domain name, you should take every advantage of it, it looks so much more professional.
And of course, you desperately need some really good copy on your 'about me' page which by the look of it is yet to be started.
Sorry, I'm not being negative, it's a great looking design I think you just have to pay attention to the small pieces to put it all together