Perfect done dude. But i've got a question, how can i take icons from normal wc3 to modify them??
Icons in wc3 are in BLP format. Basically there are 2 ways:
1 - Run the game, and make a print screen of the game. Then use crop tool to select the tiny icon and save it as a BMP or JPEG image. Then you can modify it and do anything you want by following the tutorial.
2 - Use an MPQ extractor and extract the BLP icon from the engine. Then convert the BLP icon to BMP or JPEG format using wc3Viewer and then modify it as you want.
Hope it helps.