If you don't know how the Halloween deal works Step 1: guess the two characters and get them right Step 2: draw 2 OCs in costume of the characters Step 3: you get what you want plus a trick or treat
Things to consider when guessing characters. Not a stock character and not a conuptaverse character. When your drawing the character in costume it must be 1. Colored 2. Recognizable 3. Full body