That’s assuming op wants their piece to be realistic.

Why not have 2 suns? Maybe there’s an alien spacecraft out of view shining a giant pink spot light on earth? What if it’s a solar eclipse and not a lunar eclipse? Maybe it’s from the point of view of someone on psychedelics? Maybe nothing is eclipsed and it’s just an exaggerated crescent moon shape? Or an artistic interpretation of how we embellish memories? Who cares, it’s not scientific illustration.

By all means having accurate astronomical depictions can be of the upmost importance for many artists and art styles but it’s not a requirement.