I like the choice of black background and the dark lighting does give mood but I'd like to see the lady bird (that's what we call them in the UK, incase you're about to tell me it's a lady bug) in more detail. Composition works well for me.
Technical: fit the challenge. Exposure composition focus good, lighting is bothersome. The shine on the ladybug's back is distracting- not sure if there is a red light on the leaf or not, but the color seems weird.
Personal: Great idea, but I think this could be stronger.