1st: Go to the BomberWIZard folder.
e.g. C:\Program Files (x86)\BomberWIZard
2nd: Click on the "Players" folder
3rd: Create a *.bmp and paint a player.
Size: 100 X 100 pixels is the best but you can use any size you want
Alpha(Invisible) Color: RGB 1,1,1
Howto set RGB to 1,1,1
4rd: Start the game, go to options, click on "Refresh player skins" and restart the game
5th: Select the skin in the Options menu