To fire a shot pick a letter and then a number that is on the pictured battle grid.

Upvoting the topic gives 1 pick (shot) a day
Upvoting + Resteeming the topic gives 2 picks (shots) a day

The letters go from A - J and the numbers go from 1-10

So an example of a shot would be picking the letter A and number 1. I don't have a prize located under the grid section A-1 so I would then type miss under your comment. If you pick a grid section with a prize located under it then I would type hit and send you that prize.