Ahh! So my three hours of work on checkpoint three last night, still gave me a failed attempt.
Had to re-do many questions - mostly at the end of the checkpoint. Now that I look at the answers I gave, I realise that after three hours of hard work, my brain turned to mush and I didn't read the questions properly and didn't answer to my full potential.
Now that I've had a fresh look at the checkpoint this morning, I've realised how many silly mistakes I have made.
So, for those of you trying to complete checkpoint three, take my advice - save your work regulary and make sure you are wide awake and concentrating - especially when you're fed up after hours of work!! The last few questions aren't hard - but if you don't answer every part of the question, you won't be able to pass!
So hopefully I've learnt from my mistake, and all checkpoints in the future I'll make sure I am fully refreshed with a cup of coffee by my side!