@yuykat When uploading, you should try to put the webpage of a pixiv image into the "Source" bar, or use the bookmarklet. This is a much smaller, more compressed version of the actual Pixiv version of the image. (You also didn't source this at all...)
When on the pixiv page, click the image of a standalone image and punch that into the "Source" bar on the upload page. (It should be like this: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=38814756 ) For multi-image pages, make sure to hit the arrows on the top left of the image to get the non-sample version.
Also, please do not just tag "tagme", it's not what the tag is for. That's just the same as saying you can't be bothered to tag something, so you're asking everyone else to do it for you. Needless to say, it would result in nothing getting tagged if that was everyone's attitude.