In that kind of minigame, you'll need to copy a picture that is being shown to you. It's not that big, so it won't get any problem to copy that into the determined frame. The game can be played in single player mode and multiplayer mode for up to 5 players. Every completed picture will get you points, the person with the highest score - wins.
How to install maps:
Download .mcworld file below
Open file using any file manager to import it into Minecraft PE
Open Minecraft Pocket Edition and look for the map among your worlds