That was a very technical catch and we've already discussed that he's raw as a WR.
Early in his career, while he's developing, he's meant to get the ball on jet sweeps, drags, slants etc - i.e. extended handoffs.
He's already shown he can take the top off a defence and he can make difficult catches. He wasn't worth the 1st round pick, but there's clearly a lot of talent there.