This is a video explaining how to comment on another’s post in simple steps.
https://drive.google.com/file/d/1sIRor2aq9tAhMzoMhvKvPIujcw6BHAm6/view
In conclusion, when commenting on another’s post you should always include a positive comment, constructive criticism, and a link to your own blog or post. Remember to be polite but also helpful and don’t make fun of or tease others. Last, make sure you stay on subject and that comments directly relate to the subject they are writing about.