Avoiding nerves

Step 1: Identify Avoidable causes
Competition anxiety from unknown outcomes. In most sports situations, part of anxiety relates to outcomes you want but may not get. Very few people get anxious about things they control.
Life, the Universe and Everything. There are plenty of reasons for anxiety, and many of them are outside sport. From getting to shoots on time to paying the bills before you compete, are any of those really within your control? [This also bears on managing distractions]
Step 2: Focus on the controllable
Set achievable targets
If you set your outcome goals substantially within your capabilities, you aren't gambling heavily on outcomes - and that cuts anxiety.
When you focus on process goals, you can set aims that challenge you enough to motivate, but that you can certainly achieve with effort.
Setting achievable targets cuts anxiety.
Focus on your own performance In archery, nothing (legal!) another archer does can change your score unless you let it. Set your own score targets and worry about those.
The only time to worry about other people's scores is when you have to set your long term improvement targets.
Prepare List everything you can foresee in competition. Have a strategy for everything on your list. And here's one other: If the unexpected happens, write it down and learn from it. And that's a plan for everything! How can you be surprised now?
Organise If something is going to increase your load during competition, and you can get rid of it before you go, why not plan to do that? Roy Matthews commented that organising life to improve archery was hard, but one characteristic of top athletes.
 
Back up to Anxiety page
When it works

Realistic target setting and thoughtful planning always help.
 
When it doesn't

You can't expect to remove every source of anxiety. Get real - if the outcome matters and is genuinely in doubt, there'll be some anxiety. Nor can anybody cover every base all the time.

Look for alternative strategies elsewhere on the Anxiety pages; especially those based on acceptance of anxiety and arousal control.