Januzaj is probably the best crosser the team has, but he isn't always going to cross it in. He also likes to use his left foot to cross, so he will cross more often from the left wing than the right wing. He's not like Valencia who will always look to cross so you won't see him crossing it in all the time.
Here is the bit of footwork he used to get the foul.
Here is a great pass that Rooney failed to control.
I thought Januzaj improved on his long range shooting last season compared to his time in the reserves. He used to scuff his shot more often in 2013. I hope he continues to improve in that regard, because some of his shots are really bad.