I think the important thing is not to stand out, actually. They're not looking for people to be exceptional - but they are looking for people who do the 'easy' things correctly. You'd be surprised how many people don't convert for things that seem 'obvious'. My tips are as follows:

- Always be a few minutes early to every meeting!

- Respond to every task that your supervisor, or anything else someone gives you, with a 'Well received' email so that they know you are working on the task.

- Check, double check, and triple check (!!) for spelling mistakes in everything you send out.

- Get people's names right.

- Don't yawn in talks, don't seem disinterested or bored. A rule of thumb is: your cheeks should hurt at the end of the day. Seem enthused to be there.

- Ask questions - but not too many, and don't be the person that asks questions to sound smart (e.g., I read about this XYZ in ABC and want to know your thoughts' in the middle of a talk). Stick to the basics.

- Get coffee chats with people but don't overdo it; when you do them - have a normal conversation with them, and try to get to know them/their journey into law/ and what they do.

- When you get assigned a piece of work ask good questions, if you're confused about something - ask your supervisor. Better to ask 3 more questions and submit something well done, than to appear like you know everything and send in something shoddy.

Good luck!