I wrote out a long reply then the intrawebs ate it. Sorry, not typing it again.
Practice makes perfect. Abbreviations are cool but can bite you in the ***. Be thorough but know what's pertinent and what you can leave out. For example the lady with toe pain doesn't need 8,000,000 pertinent negatives listed. "Denies any numbness/tingling in the effected extremity or any other associated symptoms or complaints" works just fine. Rather than "the pt denies any recent trauma, illness, medication changes, head/neck/back pain, dizziness, visual changes, weakness, chest pain/pressure, palpitations, shortness of breath, abdominal pain, nausea, vomiting, diarrhea, numbness/tingling in the effected extremity or any other associated symptoms or complaints." See what I'm getting at?
Pick a format you like and stick to it. (SOAP or CHART or any variation of either). Eventually it will just be second nature. Ask your coworkers if you can read their charts. Pick things you like and things you don't like and develop your own style.
Don't make up reasons as to why an ambulance was required, that's fraud. Not advocating saying "they didn't need an ambulance" but DO NOT make up reasons. If your company is asking you to do that you should be looking for another job because that's not a place you want to be.
You can make your charts funny, but they must be professional. Example: "Upon arrival we find a xx year old male patient seated on the sidewalk against the building on the southwest corner of the above noted intersection dressed as a pirate yelling "Arrrrggg mateys hurry! He knifed me in my belly!" with mild external bleeding visible from his abdomen."
Funny to read and gives the reader a hilarious mental image but in the end that's exactly how it happened and if that call goes to court I will know exactly which one it was rather than one of the other random stab wounds to the abdomen I've run on this year.