In 3-5 sentences, explain the characteristics of a well-written melody.

Good melodies come with practice. The criteria that must be met in order to come up with a good melody are as written; Most good melodies use repeating elements.
Most good melodies are comprised of stepwise motion, with occasional leaps. Melodies that are too leapy are often too difficult to sing. Most good melodies have a climactic point. A climactic point usually refers to a melody’s highest pitch, but not always.

Iwould say overhead, b/c front would shine in their face, and might mess up the picture, especially if taken by a so either front or overhead, but i'm leaning towards overhead

Well, the four major ones to use would be contrast, proximity, alignment, and repetition.