start looking at some pictures and scrap book what you most like, then try and eliminate the ones you don't!
I tried to go with what made me look like ME! and what was comfortable.
You could always do a pro's and con's list for a veil, flowers, etc .... then see what you're left with.
If you are getting married in Kenya I would go for something very informal maybe with a native flower in your hair, the last thing you need is 200 hair pins, 5 bottles of hairspray a veil and a tiara if it's 90 degrees in the shade, you'll BOIL! lol xx