Similes are most effective when they connect ideas, emotions, or images that don't usually pair together. Originality leads to interesting comparisons, which are often more successful at conveying complex emotions, capturing a reader's attention, or painting a memorable picture. All about the imagery.

How does simile effect the reader?

Simile - a kind of description. A simile compares two things so that the thing described is understood more vividly, eg 'The water was as smooth as glass. ... A simile can create a vivid image in the reader's mind, helping to engage and absorb them.

Why is this simile effective?

Similes are a great way to make writing more exciting and memorable without losing clarity. ... Readers are more explicitly aware of the direct comparison that's being made with a simile compared to a metaphor, which is often more poetic and subtle.