If not, then perhaps you could focus on the technique that you are applying and consider whether you are balancing your right hand and left hand skills evenly.

要不然，你或许可以把注意力放在采取的方法上，想想自己是否均衡地运用了左右手的技能。

youdao

The touch in your left and right hand technique can definitely make or break your tone.

你的左手和右手的技巧绝对能制造或者毁掉你的音色。

youdao

One of them is the technique you saw me do with my left hand where I wiggled it a little bit. It's called vibrato.

其中有个技巧,你们看我左手的手法,我略微揉动琴弦引发出颤音

耶鲁公开课 - 聆听音乐课程节选