Hi Frank, you're welcome to upload any of your J-related pictures. We even have a category for "non-Japanese" pics. The maximum file size is 250kB which should be enough for a decent scan. The forum and the gallery share the same database, so in case you are prompted for login details, use your forum handle/password, then click the "Upload Photos" link in the top menu.
If you use PS, save your scans as .jpg which is the best format for photos, also make sure their dimensions do not exceed 800x600 pixels.