Morata's debut El Clasico in 2013, he played the left wing forward position that C. Ronaldo usually occupies, and had an amazing match. Whipped in a inch perfect cross for Benzema to slot home the opener and dominated his side of the pitch throughout the match, should have had a couple more assists, almost scored, and was fantastic harrying and harassing Barca.
His crossing is very underrated, as is his passing.
His biggest problem currently is still his decision-making, and keeping his head up when playing as a Prima Punta. When he's in that centre forward role he often forgets about anything besides going for goal. Conversely when he plays out wide or as an SS to a CF, he often gets far too unselfish and starts to pass the ball at times when he shouldn't.
The hope is that as he becomes more and more experienced this decision-making process will become much smoother, and he will gain better awareness of what's going on around him on the pitch. But he could easily turn into a world class CF and a very good attacking winger. SS I have my doubts about.