I have the odd blemish, particularly two moley sort of things over my mouth at one side - both my mum and nan got them in late middle age
I tried covering them but it just drew attention, so I try to highlight the good things about my appearance, my eyes I think in my case, and hope nobody notices the bad
It is hard to totally cover blemishes without wearing heavy makeup, unless you get into the birthmark covering stuff......
Chances are these age spots are far more noticeable to you than anyone else? ((((((x)))))
If you do want to go ahead, I'd go for the stick matte concealers rather than the Touche Éclat type of light reflecting ones. Body Shop do a nice one, rather like a thin lipstick