[header] How to design your own killjoy outfit [title] Watch the na na na and sing music videos to get the idea of a killjoy outfit. [substeps] You will find that killjoys have a top, a jacket or vest, pants, boots, gloves, a helmet or mask, and their signature ray gun. [title] Find your personal style. 
[step] Incorporate it into your killjoy outfit. [substeps] For example, if your favourite colour is purple you can make your gun purple and add purple highlights to your clothes.