Margaret Shaw - Artwork - WiP Harbour Dusk

I encountered this stunning image whilst on holiday on the Moray Firth.  A wonderful place for sunsets and dusk.  As a  matter of face it's pretty wonderful full stop - but I diverse.
I've done the initial drawing from the photo on the I pad and now I'm on the laptop
I can already see a few tweaks that need making but I'll do those at the transfer to art paper stage.
I've also drawn at A4ish size but am wondering about a scale up to A3ish.