New photos

Remember when I was talking about buying a new lens for my camera a few weeks ago? I did quite a bit more research and finally decided to go for it. I finally received the lens on Friday and been trying it out a bit. I've been busy this weekend, so I've only had time for a few shots, but so far it seems good.

This is an unedited photo of George (and my hand). I really needed on for product photos for the shops ( here and here), but would love to get better at portraits as well. So far, it seems that this is performing well on both accounts. I'll definitely do some more testing. Hopefully I'll learn a few things along the way too!

In your opinion, what's the one thing everyone should know about taking good photos?