So you have a emblem that you want to add to your Zloemu account but you cant add it because of the requirements?
Well i have found a tool (http://www.imagemagick.org/script/index.php) that you can use to convert to emblem
1. Download Photo-to-emblem converter.7z and unzip it anywhere on pc.
2. Put inside that folder your picture.
3. Run convert.bat.
4. Input picture filename and press enter.
5. Done, it will be named emblem_ready.png ,now you can upload as your own emblem.
6. Goto https://bf4.zloemu.net/emblem and upload it.
7. Enjoy.