Very nice, I love the subjects, those are awesome ships.
A suggestion - have you considered trying a clear matt finish to dull the paint? The shininess of the gray (and the boats) on the Hood is something I noticed - perhaps a dull finish would enhance your work - your painting isn't bad it looks neat and well done. The others look less shiny - did you do something different with them - or is it just the pictures? Painting the ends of the barrels flat black or even drilling them with a tiny bit might add something too. I think they are quite presentable as they are - please don't take this suggestion as a negative comment. Thank you for sharing - they are very nice models.