As soon as you click on the create button, the YouTube playlist is created on your channel.
Before uploading videos complete the YouTube playlist description. Click on the edit icon in the description to update YouTube playlist description.
First 120 characters will be visible on the YouTube search results, so make sure that it’s optimized for keywords.
Add a couple of paragraphs(2-3 lines) describing what they are going to get by watching your playlist.
Then put a table of content and list all your videos titles in the same order as you are adding videos to Playlist that will optimize your playlist further.