Luke, as already mentioned, that fly will get fish. I would offer three suggestions. First being, again, there is nothing wrong with your tie. Secondly, thin out the tail a bit and even substitute Marabou with different material like Pheasant tail or Rabbit. Thirdly, when wrapping the hackle, tie in by the tip of the feather at the bend, then wrap to eye. This will put the larger part of the feather at the eye. Then do a couple more wraps at the eye making a collar. This is called a pusher.
So many little variations to a simple pattern that can create and trigger bites. Just suggestions to what you already have down.