This may or may not apply to your piece, but usually when I come across a piece of porcelain that has a decoration on the bottom, such as a flower, the flower was placed their to cover the original manufacturer's mark. This was done by those whose hobby was decorating porcelain, they would then place their initials, name or cypher on the bottom.
Since the "mark" is hand drawn, this is probably the case with yours. The easiest way to tell is by examining the decoration, as most were good painters, not great ones.
