agree with jek. Add a contrasting colour to bring attention to your subject, black & red does not go well and seems rather unhealthy. A lighter colour would complement red.
Try to arrange the berries in some form of disorganised pattern. Rows and columns are boring, so take some time to position the berries.
Watch your dof or keep the berries flat & even. You have a large spot of oof at the bottom right. It would look normal to have the entire plane sharp.