[header] How to have a cupcake baking competition at your house [title] Plan the competition. [step] Decide on the rules, the day it'll start, who you want to participate, the time the competition will take place on, and (optional) the prizes. [title] Send out invitations. 
[step] You'll want to send out invitations at least 1-2 weeks in advance. You can also post fliers asking for competitors.