He could work on his vision in the box when he has the chance to pass instead of shooting from a poor angle. However, he is still young and in form and it isn't a massive issue yet.
Do you have an example? I actually think his awareness and decision making regarding shooting from difficult angles is quite good. He has assisted/scored a lot when he shoots from a 'poor angle'.
Example from yesterday: This could be considered a poor angle I guess.
(yes I know this didn't went in and perhaps Son was a better option. But still ... Harry has a quility shot. Even from difficult angles he scores a lot.)