Hey there, will see what i can do this next week.
Multiple images can be tough, but for now you can put some images together with photoshop or any other software and import as one image.
Completely fair. The important thing is to have fun with it.
Currently i am working on a way to create a json file to go with a .exe/webgl client to show and use the files in a easy way. If there is some special request you want i can try to add it as well.