image transferred onto black fabric?
I'm not an expert on this technique, but this Instructables may be of help:

http://www.instructables.com/id/Iron-on-Transfers-for-T-Shirts-Tote-Bags-and-Oth/

Here is the section on making transfers for dark fabrics that seems to overcome your problem of not being able to use white in your image:

Iron on Transfer Sheets for Dark Fabrics
"If your shirt or fabric is black, dark gray, dark blue, or another dark color, you'll want to buy iron on transfer sheets for dark fabrics.  They are thicker and have a white backing, allowing the use of white and light colors in the image or design.  The major downfall of this type of transfer paper is that with the background appearing white, you cannot have part of your image appear clear... so you must carefully cut around any letters or other design elements or have a solid background as part of your design." 

Additionally, here is a YouTube video showing the technique for tranferring onto dark fabrics, with links for buying the paper.
(note: Epson also makes and sells transfer paper for dark fabrics.)

https://www.youtube.com/watch?v=Xi_2X8sKifY
"In this tutorial we cover the ways to use and the applications which transfer paper for dark fabrics."

Sources for the paper:
UK/International Store - http://goo.gl/MkeowS 
USA Store - http://goo.gl/S0eIFJ