Those ships are very good! But I really think you should take your time when painting the ships. So many people use that kind of texture on ships, but it looks bad. You need to use flat colors, but use a metallic texture and use multiple colors that look good on the same ship. Just make sure to not use designs that are too complex, or it will be hard on the eyes and will blend together, making the rest of the small features on the ship harder to see.