how can i hide my facebook wall from someone who is my friend?

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What to do just edit ur privacy settings
get the info u need to control ur sharing on facebook
EDIT PRIVACY SETTINGS
your privacy setting page has a group of general controls for ur facebook account and this is what to do.
-if u're using a smart phone,
1. Tap photo at the topleft of any page
2. Scroll to the bottom of the menu
3. Tap account >privacy
-if u're using other phones,
1. Click settings at the bottom of every page
2. Choose privacy setting.
For everything else you share on facebook ,use the dropdown menu to choose your audience right before your post.
*photo public (maximum audience for adults)
*photo friends of friends (maximum audience for minors)
*photo friends (+ friends of anyone tagged)
*photo custom (includes specific groups,lists of people you've decided to include or exclude)