Don't verb nouns. Don't use no double negatives. Make each pronoun agree with their antecedent. When dangling, watch your participles. Don't use commas, which aren't necessary.
Verbs has to agree with their subjects.
About those sentence fragments. Try to not ever split infinitives. Its important to use apostrophe's correctly. Always read what you have written to see if you've any words out. Correct spelling is esential.