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learn to walk without sound on all other surfaces before you master the woodlands. Be mindful of your own presence at all times. Master the skill of silent walking to the point where you do it without effort. Once full mastering has been achieved, you'll notice that you have to make an effort to be heard. It's now a part of your regular walking style. You have become stealth!
It's a this point you can take your sneak-skill to the woodlands.
Being seen is another issue. If you don't want to be seen by humans get camo that obscures your silhouette. Most animals are colorblind and you will appear as gray to them. They will most likely smell you before they can see you, don't pass gas and don't burp. Granted you have mastered audio-stealth, they'll never hear you.