While some people treat sentences as a singular aspect of speech, they are really made up of numerous parts. Each of those individual components can mean an entirely different thing when taken out of the context of the entire statement. As such, care should be taken to ensure that it communicates exactly what you’re trying to say.
Dependent Constructions. When writing a sentence, always consider the meaning of each of the phrases and clauses that form it. That way, you can determine each of the dependencies, so that you may structure the sentence to properly reinforce them.
Punctuations. It can’t be stressed enough how important proper punctuation is to well-written sentences. In truth, a single comma, colon or dash can change an entire statement’s meaning, so be very careful when editing your materials for punctuation.
Non-essential remarks. Some statements in the sentence might fit in well, but aren’t necessary to make the point (i.e. they’re parenthetical remarks). In these situations, it’s usually fine to leave those in. If the sentence reads even just a little bit ambiguous, though, target them as the first items to be taken out.
Most writing software won’t be able to help you on this end, especially if the text already follows standard grammar and syntax. For the most part, it’s all about how well you can objectively judge your own writing, so that you may be able to competently revise them for better clarity.

