A fine start.
A few things to consider:
~The port holes on the hull are not SB standard color
~There are pixel errors on the 5ht and 6th funnels
~Casemates need shading, but I would suggest replacing them first
~Air intake thingys are unusual
~Everything on the deck looks plain and boxy
All in all though, it isn't a bad drawing.
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Worklist
"If people never did silly things nothing intelligent would ever get done." ~Ludwig Wittgenstein