I'm not sure if you can find the actual icon on your hard disk or not? If you can, just open that file in preview, do 'command-a' (select all) and then 'command-c' (copy to the clipboard.
Click on your (iconless) Home folder, and press 'command-i' (or control-click 'get info').
See the small folder in the very top left of the 'get info' window. Click it once, it should be surrounded by a blue border. Now hit 'command-v' to past the home folder icon on the clipboard in place.
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If you don't have the icon, go to
> System Preferences > Users & Groups
Click the '+' sign to make a new account. Go to the home folder of that account and do 'get info'. Click on the tiny icon in the left, do 'command-c' (copy). Open Preview. In Preview menu, choose 'New from clipboard'. Save the file to your 'shared' folder (Hard disk > Users > Shared). Go back to your own account, open the preview file and do the first part of the procedure I gave you above (i.e., command-a, command-c, go to your home folder, 'get info', click the icon to get the blue border and hit command-v).