Advice: for new post, you may describe your issue. If you tell us what is your problem, we can help you more easy. If possible, it would be nice if you could tell us what type of error this step says. So, You can learn a bit how the things works. It´s better for everybody!
Keep that in mind.
Solution:
In this step, you must to add a new line with the element h2. Don´t change anything. Look the previous h1and do the same (but whit h2, of course)