Time is your friend- wind is not.
If the wind is not right forget it. Change plans
Think about where you want to go and where your going to walk in relation to the surrounding, Humans like to take the easiest route, your going to want to walk through a clearing when you should be in the edge.
Use game trails they are quieter.
Tune your scenes and then use them.
You need to stop often (I change pace, if the are's starts looking good, I slow down more) then you need to listen carefully and look carefully. Use your bino's. being lazy with either will get you busted.
You have see the game first! (this sounds simple but its not and its KEY to success)
Don't wear boots or big shoes or either with a lot of Tread. More Tread=more noise.
have good core balance and control. (train-fitness) Walk so that you can be 3/4 through a stride and be able to stop without putting that foot down, if you fall forward you have to much weight going forward and not enough control to put for foot down quietly.
*OK-walking along casually does not spook game the same like some have mentioned above, BUT, you try turn that into a kill with a stick bow and I promise, you are simply better of doing it right and seeing the game first.
Did I say Stop and look and listen often
some kind of face paint or face cover for deer hunting.
are a few