Composition is fine , in regard to a high center viewpoint.( much better than the center bullseye approach, used by an unknowing amateur. Even cutting off subjects head is an accepted form of composition.
Perhaps taking a shot like this , would have a different feel . If taken from a lower camera position shooting up at a jumping subject.. Or from a high camera position , as R B states shooting just the mat, elininating the grassy background. But I really miss not seeing a shadow underneath illustrating some kind of depth.
