Keep up to date with body maintenance ie
Set aside time to floss
Paint nails with clear varnish and keep shortish and very clean
Have handcream tubes on every sink and basin (and a pot by the sofa) and cream up regularly
Take care of your neck - shows age very badly
Develop a make up routine which takes minutes and covers the basics. For me, tinted moisturiser, blusher, eyebrow pencil, mascara and lipgloss is a 5 min job
Clean your shoes - babywipes good for a quick buff but need a proper polish once a week at least
Keep the right weight and dress for your weight. If you are larger than you would like, buy the right size clothes and diet, then ebay the bigger ones. Nothing looks less groomed than pouring oneself into a size 12 shirt and having the buttons straining to hold your norks in. Ditto muffin top.
Am currently struggling with the last one, festive excesses and all that.