Thank you :).
I just applied the wax with a stiff paintbrush and buffed it with a dark rag (white rags were leaving white fluff stuck on the wax). But I think it's a given that the wax will not look even, especially on dark colours. I had problems with the countertop, you can see it on the picture. In case you haven't done so already, you can check out this website, this lady is an expert on painting and waxing: http://4theloveofwood.blogspot.ca/p/how-to_9274.html
Good luck!