I think you look lovely and certainly not in need of make-up but it can give you a boost so here are my recommendations:
Tinted moisturiser - I like Laura Mercier and Stila
Mascara - Clinique Long Pretty Lashes is nice for every day, Lancome Hypnose is great for a more vampy look
Concealer - Yves St Laurent Touche Eclat for under your eyes and Mac concealer for anywhere you need more coverage
Eyeshadow - I love Stila "Kitten" (a gorgeous shimmery beige, like a crushed pearl, seems to flatter everyone) or else Bourgois Beige Rose which is similar
Blusher - I didn't wear any for years but it's amazing what a healthy bloom it can give to your face. Bobbi Brown's shimmerbrick compact in beige is fab for a healthy, tanned look - swirl a brush over cheekbones, nose, forehead. For a healthy bloom, go for Benefit's Dandelion or Nars Orgasm - swirl lightly over the apples of your cheeks.
Never line the inner rim of your lower eyelids without lining the top as well. I like a soft grey eyeliner (or maybe brown with your colouring) as black can be a bit harsh. Bobbi Brown does gel eyeliners which have amazing staying power and don't smudge once you get the hang of them (they come in a little pot and you paint them along the lash line with a little brush). Someone at the counter could show you how to do it.
L'occitane do lovely lipglosses - not too gloopy. Laura Mercier has some lovely sheer lipsticks (available from Space NK)called Stickgloss which are fab.
I think you said you don't use moisturiser - if you're interested have a look at Liz Earle's range which is available from QVC where you get a 30 day money back guarantee. I know people snigger at QVC but it's a great chance to try something for a wole month with no risk if you don't like it. I can heartily recommend the Skin Repair moisturiser and the eye serum and eye cream. It is simple and not overpriced and very comforting to the skin.
I know that some of the brands I've suggested above are expensive but you might even like to approach the counters for ideas even if you don't buy - might give you an idea of where to start.