As my title is newbie but i have experience with the trading so there are many things which we should do and avoid while trading.
As we all know that the basic rule of trading is to buy any coin as its possible minimum price and sell it at the possible highest amount to gain the profit.
So here is the things which we should do in trading,
1. Monitor the bearish and bullish market carefully
2. Follow the trends going around the crypto world
3. Invest only that amount which we can bear to loss.
And the following things we should avoid
1. Greed while trading
2. Keep the emotions away from trading
3. Don't invest in dump coins
This is my experience which i write with clear words and what your experience and addition in this post.
Although no one is perfect but at least we can make efforts to be better. In the case of greed, it is a very huge issue and once a trader overcomes it, he would have learnt one of the best things (attributes) about trading. You really did well with this post and it is closely to what I was taught and have been practising; to add to your list, not only dump coins should be avoided, but also pump and dump coins. Another is, a trader should be careful of these signal channels and groups. Lastly and most especially, the knowledge of trading should be acquired before venturing into trading to avoid costly mistakes.