expanding my pixels, help with adding a star

[Pauls]

so im going to be expanding my pixels for next year and im currently trying to work out how to add i pixel star, i have done the tree no bother, the star i have made is 50 outer ring 30 next ring and 20 inner ring if that makes sense, how do i create a visulisation of it so when designing shows if i group together the star and tree they will look right.