6-marker questions

Hello, any science examiner here?
I just did my WJEC chemistry unit 1 exam today. I have a question - for my 6 marker question, (QER) I didn’t miss a line nor did I space it out correctly or structure it right. I just wrote it like an essay - in my biology exam too, I had all the knowledge as well.
Will the examiner deduct my marks and cap it at a lower mark if I didn’t organise my response correctly? I really don’t want to make the same mistake for my physics exam either.
(I also wrote for my chemistry paper - sorry for not spacing it out correctly and used a ruler to try and underline to ‘space’ it out right).
Thank you!