I'll see if I can re-create What Enoch mentioned earlier.
1. Attack your equivalent number in the war for your first attack. (If you are no.8 in the war you attack the enemy no.8. If your number 9 you attack 9 and so on).
2. The clan should aim to have there first attacks done within 12 hours. This then enables the clan to establish where to attack next.
3.if you are blitzing a 3 star attack in a war with ease,you are attacking too low,however if you just scrape through your probably at your appropriate level.if you are no.1 in the war you should not be attacking the very bottom on your first attack.even though you will guarantee 3 stars,you greatly minimise who your fellow lowest clan mate can attack therefore wasting 2 attacks.
4. Use both attacks.
5.make sure you request troops before attacking.request what you think you need to win and then clan mates donate what is asked
6.if you aren't sure how to attack your opponent or not sure who to use, ask for suggestions and ideas from others.
Feel free to add more ideas and suggestions but I believe the above should be a general rule of thumb
