Yes, the funnels are way, way too small, or rather too short! There's simply not enough draught in them! Your bridge for the time period is, in contrast, too large. Check period references and you'll see what I'm talking about. That's, however, a simple fix. Also, what the heck is that see-through (?) thingy, that looks like a rectangular box, approx. in the middle of your bridge? If it's supposed to be a covered bridge wing, I can tell you that that's not how you should draw it. Again, please check your references on that one!
and the funnels, the armoured belt looks oversized, why do you have that weird painted line on the bow again (all your ships seem to have it, even when not from the same nations, and no real life ones) , I have some doubts about the middle props fitting in that position, masts look off, and where is your conning tower? and those secondary guns, are they all mounted in line, unable to fire forward and aft?
and then we have the detailing, like incorrect rigging, bridge shape, stern gallery without windows, extremely messy lines at the bow and stern underwater hull, oversized bilge keel...... but that is all stuff for later fixing, first get the above done
I am sorry, but I will not wait until 'you do it later, first I fix X and Y' as experience learns me that you never do the stuff you do 'later'