The first correction I got here was an explanation why I should use the capital letters in a title.

Now I know that titles in English academic writing can be highlighted in bold, italicized and underlined, however the authors can choose only one of these style.

“highlighted (in bold) … italicized … underlined” you want items in a list to match in tense. You could also say “bolded” when referring to text.

In addition, a title should not have a full stop, but should have toa question marks if it is necessary.

Formatting is only one side of the coins.

The idiom is “coin” singular.

AnThe other side is an understanding of who are your audience.

To connect to your earlier “one side to the coin” idiom, you can repeat here, now with “the other side.” This helps signal an additional or counterpoint related to your original argument / thesis statement.

The titles of an essay will be dependings on whether it is a general audience or expertsor expert audience.

Since “essay” is singular, only one “title.”

Move “audience” to the end so that “general or expert” modify it. You could say “general audience or expert audience,” but that is wordy and repetitive.

In botheither cases the titles haves to be interesting for readers and give answers for two or more questions such as: ¶
1) What is the subject about?

Since we’re talking about EITHER a general OR expert audience previously, we can keep this singular.

It could indicate the general directions of the essay.

2) Which specific aspects your essay is focusinges on?

IfWhether the author wants to add details and specifics.

I’m not clear what you intended this to mean. “If…” sets up a conditional statement, so you’d need to include a “then…” to accompany.

Number point #2 says “your essay,” so in this sentence, the subject should also be “you” vs shifting to “the author”

AuthorsYou can enter words such as summarize, compare, evaluate, etc.

In case if you are talking about some specific area.

LBy looking for these components, readers should be able to predict what an essay is going to be about.

The last point I want to mention is the titles should be written in a concise style, using powerful and meaningful worlds and contain enough data as well.

How can I understand mywriting titles?

Maybe, "How can I write an effective title?"

The first correction I got here was an explanation about why I should use the capital letters in a title.

or "...in titles."

It means I have to capitalize all important words, for example, the content words.

Now I know that titles in English academic writing can be highlighted in bold, italicized and underline,d; however the, authors can choose only one of these styles.

In addition, a title should not have a full stop, but should have to question marks if it is necessary.

or "...if necessary" or "...if need be".

Formatting is only one side of the coins.

It is not right to focus on the format of thea title when composing ithem.

Or, "It is not right to focus of the format of titles when composing them."

Another side is an understanding of who are your audience.

Or, "Another side is understanding your audience."
Or, "Another side is understanding who your audience is."

The titles of an essay will be depending on whether it is targeted at a general audience or experts.

In both cases the, titles have to be interesting forto readers and give answers forto two or more questions such as: ¶
1) What is the subject about?

2) WOn which specific aspects is your essay is focusing?

If author wants to add details and specifics.

In case if you are talking about some specific area.

Looking for these components, readers should be able to predict what an essay is going to be about.