One way to do it is by breaking the story into smaller tasks and then assigning points based on complexity and effort needed. Simple tasks get fewer points, complex ones get more.
You could start by looking at its size and comparing it to real animals of similar proportions. Then, consider its build and the materials or substances it's described as being made of.
You can estimate the page count by considering the average number of words per page and the total word count of your novel. A typical page might have around 250-300 words.
I can't estimate the exact word count of the storyline book I like because I can't get the exact word count of this book. Different novels may have different word counts and many novels are edited or edited when they are published. In addition, the requirements for word count may vary from one publishing house to another. Thus, I am unable to give an exact number. However, it was normal for an ordinary novel to have a few million to tens of millions of words when it was published.
To update the original estimate in a Jira story, first, open the Jira story. Then, look for the 'Estimation' or 'Original Estimate' field. If it's a simple text field, just type in the new estimate value. If there are specific functions or workflows in your Jira setup related to estimation, follow those procedures. For example, in some cases, you may need to click an 'Edit' button near the estimate field to make changes.
You can start by considering the character's height, build, and physical activity level. For example, if they're tall and muscular and involved in strenuous activities, they might weigh more.
Another way is to consider the complexity of the plot and the number of subplots. More complex stories often take longer to unfold and thus have a longer perceived duration. Also, the genre can give you a clue. For example, a mystery might keep you engaged for longer than a simple romance.