In order to create an embroidery design in Husqvarna VP3 format from a BMP image you need to do a two step conversion. You usally first need to digitize JPG to some more common format like JEF using jpg to jef converters and then perform another conversion from jef to vp3.
Some alternative would be to find a software that can directly make this process, but this can be like searching for a needle in haystack.