Wazza - it's a nice shot, and you got lower. It's just a shame there's not enough lizard in too much frame - he looks a bit lost there.
I know you're limited by lens length, but you have a powerful tool at your disposal in that you can crop the image and lose a lot of that background. You could argue about how to crop this all day, and you have a few choices, but I've just done an obvious tighten up job which has put his body and neck on 3rds.
I've sharpened it slightly, but it's such a small pixelly image, there's not much to be done. You seem to be reducing the pics smaller than you need to really? Whenever you reduce an image in size it loses a little resolution and benefits from a bit of a sharpen up,
What you need to do Wazza is stop considering your shots as the finished article when they come out of the camera, and start having a good look at how you can improve composition, colour, etc.. The camera is just the first stage in the process, and you have so many choices you can make after that.
I'm gonna grab the camera, stop talking about it and get out and try to do it, which is much harder. :lol: