Per Friedman in his 30 Things:
28. Eichel, a right-hand shot, likes to carry the puck in on the left side of the ice. He now works with Adam Oates, and Oates is trying to correct an Eichel habit of lifting his right hand on those plays, which obstructs his view. Once he gets that fixed, he will be even more dangerous, better equipped to pick up offensive-zone options.
I don't know enough about hockey. What's it look like when Eichel is lifting his right hand on those plays? Like - off of his stick? Moving it up the stick?