Size first
: Depending upon your nature of work on a day to day basis decide the size of the bag you would require. If you travel a lot then a big gym style bag is good for you, otherwise a maxi size sling bag would work as it can also double up as an evening bag.
2
Colour code
: Your first bag should be in a solid black or neutral beige. You can also buy a few brooches to spruce it up.
3
Two at a time
: You should have at least two handbags in your wardrobe — one for the day and other for the evening. The evening bag should be small in size, preferably a clutch.