By plan, I mean decide on a colour palette to concentrate on for the upcoming season, and then buy things in those colours that work with each other and with existing items in your wardrobe? If you do, do you buy everything at the beginning of the season?
The reason I ask is because a recent wardrobe declutter meant I got rid of a few unworn spring/summer things (from a couple of years ago) that needed particular tops/bottoms to go with them, that I didn't have and never managed to find/buy. I don't want to keep doing this (although I'm happy that charity has some nice clothes to sell!) as I get bored with looking for the bits I need and give up, and I never feel like I have enough coordinating clothes to make different outfits, or to pack for a long weekend.
I'm not really talking specifics here (like the 'what are you buying for autumn' type threads), just more generally asking for your planning advice!
I love autumn/winter and could buy ALL the clothes in lovely autumn colours, but I know I'll end up with wardrobe orphans unless I am more strategic! But how??