messy lines, unrecognizable waves, uninspiring cliffs, lifeless seagulls, distorted sky, disproportionate elements, lack of serenity, confusing composition, dull colors, overwhelming details, lack of detail, awkward waves, unnatural lighting, flat and uninteresting, incomplete sketch, lack of depth, poorly executed shading, unengaging atmosphere, generic seascape, clumsy bird shapes, unappealing coastline.