Where are the image files stored at? You can upload your own images to this, correct? They do not seem to be in the Top Down Sprite Maker for Program Files.
Viewing post in Top Down Sprite Maker – Pixel Art Character Creator comments
The base asset files for the sprite styles supported by the program are stored directly in the program executable. For the cross-platform build, this is the tdsm.jar file, while for the Windows build, it is the tdsm.exe file in C:\Program Files (x86)\Top Down Sprite Maker once you have installed the program. You can look inside the executables with an archive viewer like 7-Zip and find the base assets in the sprite_assets subfolder.
The program doesn’t let you define your own sprite styles using custom assets yet, but it is a stretch goal. I’m still thinking about how best to implement this. If you want to get involved with the implementation of the feature, or just follow along, you can subscribe to this issue on GitHub.