Relate back to the skills they've mentioned in the job description.
It shows you’ve been paying attention and helps you explain why you’d be a good fit for the role. Showing why you're interested in the job is useful too.
In this example, they're looking for someone with good practical skills and a good eye for detail. This is how Andrew responded:
'I think that you should consider my application as I have a good eye for detail. I am able to follow technical drawings and plans which I have learned from studying design and manufacture at school. I have also achieved a Construction Conference Certificate and the school prize for Construction Crafts. I am expected to achieve a National 5 pass in maths which will be useful when measuring out quantities and angles.'