Now you just need to set a sequence to let it animate. This is done with a xml file.
Pet editor
If you want begin with the simple way, just download the free editor for editing this xml from this repository:https://github.com/Adrianotiger/desktopPet/releases
But if you are a guru, you can also download a simple XML editor and write it by yourself.
The XML is documented in the WIKI section of this page.
Sprite sheets
It is not easy to create a good pixel sprite sheet. So, the easiest way is to download a sheet from the web.You can find some resources from this blog post.
If you are a good designer, you can create your own sprites and use some tools to create a sprite sheet.
Icon
The xml animation has an icon, this must be 48x48 pixel. If you have just an image, you can use some converters like:Base64
Icon and spritesheet are merged in the xml file. So they have to be base64-formatted. If you use the pet editor, this is done automatically. But you can convert online your files with:This is all! If you need any help, just leave me a message.