Lighthouses

Learnt a lot and I now know why I've killed couple of my fountain pens with Indian ink!
Definitely need to work on my observation to drawing skills (Toby Haseler's other classes will come in handy) - any other constructive feedback would be very welcome
First practice here:
UniPin fine liners (0.3mm & brush) on watercolour paper:
Parker fountain pen with Parker Quink in Washable Black. Watercolour background: Roman Szmal Shadow Violet Light.