It depends on the content of your package. If it's a figure, you need the Texture folder (JPG's Trans, and Bump files), the Character folder (if a cr2 file), the Pose Folder (MAT's and INJ/REM), and if you have any props included you'll need those folders as well. I make a folder at the root of drive called !ZIPS, I then create a project folder, and the Runtime/Geometries/libraries/Pose/Character/Props, etc folders the same as my Poser runtime. I place copies of the final files in proper order, include license and readme files, sometimes detailed Help files, in the root project folder and zip the license, help, readme files and Runtime Folder all up. Send to someone else first and have them test it, don't trust yourself to test your own, and then amke your thumbnail files and upload following the instructions provided you have somewhere to host all the files.