1) Subscribe for Original textures here:
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2907722068
2) Launch the game. Original texture files will be now downloaded into game installation folder (usually it is: Program Files (x86)\Steam\steamapps\common\Bus World).
3) Inside the game installation folder open: Bus World_Data\StreamingAssets\OriginalTextures.
4) To create new paintjob, you need to copy folder corresponding to the needed bus (OSB-3101) and give it new name after an underscore (OSB-3101_RedBus). This game must be unique.
5) Inside thouse foulders are texture graphic files. Main color, "mask" and normal map. Change them as you wish with graphic redactor of your choice. Textures that is not present in folder will be taken from default paintjob.

• Texture without suffix - main color
  
• Texture _normal - used to change appeared surface curvature. You can use it to add small details but i advice to not touch it if you dont know what you are doing.
  
• Texture _mask - used for metallicity, ambient occlusion and smoothness.

_mask chanels breakdown:

• Red channel - metallicity
  
• Blue channel - ambient occlusion
  
• Green channel - not used
  
• Alpha channel - smoothness

If the cocept of chanels is new for you this link might help:
https://helpx.adobe.com/photoshop/using/channel-basics.html

6) To add paintjob to the game, copy this new folder with altered textures to: Bus World_Data\StreamingAssets\Buses.
After this you will be able to install your paintjob in free mode.

1) if you can upload the paintjob, green icon will appear in lower-left corner of the paintjob icon.







2) After clicking on this icon, upload window will appear. You can choose name description and preview image.













3) After clicking "Upload" button uppload will start. If you have not yet signed Steam user agreement, you will be prompted to do so. After this your paintjob will be uploaded to worкshop.