- open main_template in pixlr
- use it for mask and add image
- add all files to a folder and run rename_files.py
- add main folder to category.
- resize images to 1200x800 at https://www.birme.net
- add 1200x800 folder to category.
- add folder to brime
- resize images to 1000x800
- then resize this again to 1200x800
- add 1200x800_z folder to category.
- use paralells to resize to 600x400