Do not go over the paper once and for all. Go over the paper again and again to check each rule one by one, according to the following order: High-level 6 -> High-level 1-5 -> Low-level 1-3.
Low-level
Typo: Print out the paper and read the paper character by character (not word by word). You can use auxiliary tools (e.g., Grammarly) to help you check spelling and grammar mistakes. The easily made mistakes are including but not limited to: single/plural form, third-person singular, etc. When time is limited, check the most notable parts in the paper, e.g., figure and captions, table captions, section titles.
Math annotation: a) All the variables are defined before used; b) Avoid repetitive use of the same symbol; c) Mind the difference between capital and small letters, boldface and plain font type; d) Unpaired brackets; e) Check the variables to be optimized; d) Punctuations (e.g., ‘,’ and ‘.’) in the formulas; e) Dimension mismatch; f) The value of each hyper-parameter is mentioned.
Reference: a) no question mark ‘?’; b) Check the correctness of each reference including Citation [XXX], Table XXX, Figure XXX, Eqn. XXX, Section XXX.
High-level
Objective statement: Check whether each objective statement is accurate or unambiguous. Avoid obvious collision.
Subjective statement: Check whether each subjective statement is appropriate. For example, “XXX cannot XXX”, “the first XXXX”, “all XXXX”. Avoid too strong subjective statement.
Experimental results: Check whether your experimental results are reasonable. For example, A is quite similar to B, but far better/worse than B. A uses more information than B, but underperforms B.
Experimental observation: Check whether your comments on experimental results are correct.
Important references: Make sure all important references appear in your paper.
Fill in holes: Imagine your are the reviewer, what questions will you ask? Answer them in the paper before they heckle you.