This is the most important part as it plays the vital role in terms of attracting spiders and readers. The heading of the post goes as the URL of the post as well so it means the spiders will read this. Make sure you add all your targeted keywords in the URL but do not make it a mess. Add it in a natural way such that your readers love it too.
Shower your keywords
Make sure that you add your targeted keywords are inside the article. Also double check that you have not stuffed your keywords inside the article because it can make your post look like the one written for spiders and not for humans.
This is also an important one but you have to be really very careful in making it natural. Search engine spiders give more value to the headings than the words present inside the post. So make sure that you add your targeted keywords in the sub headings but again naturally. I would recommend you to use H5 tag.
Make sure you sprinkle your keywords here as well as this goes as the heading of the search engine results.