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1) A drawing on a geoid theme (this way, there will be more participants and drawings, and it will be more interesting for viewers when there is such a variety).
2) I suggest creating several drawings according to a scheme, vbn. (and in the poll, make it so that viewers can vote for several creations, 2-3, and prohibit the artists themselves from voting for themselves; the competition should be anonymous).
3) The nominations should be created when a group of people or the organizer and his assistant view the drawings, based on general discussion and feedback in the competition topic.
4) It is difficult to choose each nomination by voting; it is technically inconvenient. Make a poll for the best artist, and choose the nominations from the discussion of the works.
5) The shorter the deadline, the better; forgive me, students... let's at least finish it by June 10th.