What are some order-following techniques? The fixed ratio mentioned here is at least 100, what else? Should we set a stop loss?

Let me tell everyone who is copying trades, there are quite a few people who have responded that I opened a position but they did not. It is basically because the margin is not enough to open it. For example, those who followed with a small amount of 10-30u do not have extra margin to continue opening, so they cannot open positions. I estimate that with 100u, my orders should not be missed. Also, the copying trades are based on a fixed ratio, calculated by percentage. The initial amount has been withdrawn, and the rest is all profit. Currently, there is a little over double the profit. It is very easy to incur large losses for those who did not follow earlier if they join at this time. I do not recommend joining midway. For those who are following now, just slide away the profit in a timely manner. $BTC $ETH