Titles, sound, description and video installation on YouTube

Not so long ago I was conducted work on the video for a long time familiar to me channel.

This video was filmed as well as me but 3 years ago.

Today, my work included:
1 . Installing video (cutting some moments)
The 2nd Creating titles for video
3 . Write a script for the text.
and 4. The sound.
and 5. Writing the description
6 . Internal optimization: keywords, suggestions, analytics.