As it was suggested, I'm going to go step by step. I've decided to start with pants. My take on that is that the bottoms are the true base of a wardrobe. And I know I have far too few of those. I have a hard time finding things that fit, and it's so easy to get dazzled by a top (or a skirt).
So I grabbed all the pants I have in the closet and looked at them. Here are the criteria: 1) Does it fit? 2) Is it the "right" color? 3) Is it Base or is it "Fun" (Trendy, patterned, something I like wearing)? All the "no:s" left the closet. What I had left were 2 pairs. A pair of basic blue jeans (that I really love), and a pair of fun black, striped pants with suspenders.
Then I browsed online for basic wardrobe pants. What I found isn't necessarily going to make into the closet, because I don't know if the things fit yet.
The uploaded images show both my pants, and the pants I found.