So many of the pictures that people want to post are simply too large. In order to save bandwith, the moderators and admins of PlanetSRK have asked people to post thumbnails. The process isn't immediately obvious, and is difficult to explain with only using words, so I thought this pictorial tutorial might be helpful. When you upload the file into the photo album and it is approved, then you're ready to post the thumbnail. Go to the picture in the Photo Album. Go to the thread in which you intend to post the picture. That's it! If you have any questions, please just post them here. I'll do my best to answer them.