You had a good idea but two things you need to be aware of first off your background is wrinkled causing a distraction.
Secondly, Casper is in your photo. You probably would have done better if you had a 3 dimensional casper as compared to a sketched casper. This is too flat this way.
I like that I have to study it but it's so faint (I'm sure that was your point) that it loses impact. It has a pink tinge to it on my monitor. It could have worked with a bit more contrast.