The idea behind this, is that the engine I've built will actually render the image, instead of using an image, thus the small size of 24x24. It will be seen as the detail file is seen, to the player.
The prototype I built 2 years ago can be found at
http://www.beetlebear.com/MGE.php
I'll be working on the game in full JAVA for the time being. | 
The intended original size is what you see, not sure how to post this stuff when it is meant to be seeing the edges and corners of every pixel.