The APA has not been approached about admitting the Brabanter to the APA Standard. You will need to look at an APA Standard and follow the same format that you see all the rest of the birds in it using. That will give you an idea of what features need to be described.
When you are ready the...
I have some suggestions. The British Standard does not seem ot be in the British Poultry Standards. There is the Standard from the BKU Club but it is very vague and personally I can't see how it will help much. I can give you a Dutch contact if you want help in translation etc. Most other...
It would be smartest to use the country of origin's Standard. If you started today, it would take at least 6 years to get these into the APA Standard....although it will probably take longer.
Walt