well, shipbucket has an shading standard. if it is more then you see on other drawings you see on this site (and on small craft, a lot less is often enough) it is most likely too much
design wise, I am a bit wondering why the portholes forward and none aft (machinery aft and crew space forward?) and the anchor is too far back (the more forward, the better)
the railing looks also a bit low (no use if it comes just to your knees)
otherwise, it doesn't look too bad to me