If I am a newbie trader, I think I won't allow others to trade my coins and then its too risky because I don't know you personally.
And if I'm going to do that, I guess I cannot explore or excel my skills in trading If I will depend my capital to others skills in doing the
actual trade in the market exchange platform.
It is never even advisable for a newbie to allow other to trade on his behalf because it will only end up making such trader useless and weak, a newbie needs experience to really learn the trading terrain and gain lots of strategy, the pro trader who promises to also trade might lose too, because what they will give you is 50:50 chances.
So if there is non-guaranteed of winning, then it will be better I trade it myself, then if I make a mistake I look into such mistake, research on it, ask mentors about it and learn to become better and be a good pro trader like the person that promises to trade my money.