There is no single acceptable form that a resume should take, but there certain conventions. Within these standards, however, you must choose the final look of the resume. Remember, in content and presentation, your resume will reflect your attention to detail. Do not create a distracting appearance with overuse of fonts or indentation. Normally, it is best to use one or two fonts, and it is best to avoid multiple font sizes on one page.
Double indentation is unnecessary.
Make the decision based on which is more impressive to the recruiter. Do not date overprecisely-the reader is primarily concerned to assess the progression of experiences you have had with, at most, relative duration. The recruiter is evaluating you, not the company you worked for. Exclude irrelevant personal data such as age, marital status, etc. If you don't have periods anywhere on your resume, you can't forget to include them.