Thank you for agreeing with Catholic dogma. :-)
You will not convert a Christian, to worshipping or praying TO Mary.
Well, there's already about a 1.3 billion Catholic, Orthodox, and Anglican Christians who do what you wrongly describe as "worshipping Mary", so it's fair to say we have a pretty good head start.
Close, but not quite. Although the first part of the original statement above sounds similar to Catholic dogma, it is in fact in direct contradiction of Catholic doctrine as it applies to Mary since an exclusionary exception is made for her as the Mother of God. From the Council of Trent, Session VI, Canon 23: