Collect a high amount of crown pieces and craft as many crowns as you can. Now, most crown pieces come from the Queen's choice lottery, in which you can only draw every two days. And you'd have to be VERY gem rich in order to draw from there ten times. That's about around nine hundred gems I believe to draw from Queen's choice ten times. Here are some tips, and just continue to draw from Queen's, Carmen's, and Lizzy's choices to get more crowns and crown pieces. I hope this helps. Take care.