Nicely done Ian
What are you using to resize your images for upload? If you have control over the eventual size, my suggestion would be to keep them a bit bigger and not to compress them so much. There appears to be quite a few compression artifacts in both the images. In your version of Photoshop do you have under the file menu "Save for Web"? This is the best option around as you can exactly compress your image to keep it under the site image size limit yet maintain the best size and quality.