Retitle — …will improve your business writing. Some of these suggestions will make all your other writing lifeless and horrible.
Complexity of writing isn’t actually a thing to avoid in all situations. Descriptive terms can be your friend, complex sentences can lead to increased understanding, and a complete paragraph should contain a complete idea. Some people are capable of succinct, complete writing, some aren’t. If the paragraph doesn’t both support the idea and give examples, you’ve written a very short list in prose, not a paragraph.