You can upload and share everything relating to include icon in Flutter. You also can download it, if it’s useful to you.
Note: If you use icon creator to create the icon, the icon sometime will be smaller in the phone, so that you need to adjust manually using “configure image assets”. By using launcher icon generator, you can adjust the size of your icon before export to .zip file contain all the size needed and replaced in folder “RES”. I think launcher icon generator much more easier.