In a simple letter, a comma comes after a greeting, such as "Dear Auntie,". An exclamation point might be used, such as: "Good to see you!" In a business letter salutation, a colon might be used: "Dear Sir or Madam:"
Thank you for your hard work is an example of a good closing salutation in a Christmas card from a manager to their employees. A manager could also say something like, looking forward to a productive year.
Not all foundation does. Usually good quality makeup brands don't have cakey foundation. Try MAC maybe, they're really good. Also your skin could just be dry, try using a good moisturizer under your foundation (apply every time!) and a face makeup primer.