need / must / should / ought-to / have-to

This sign can be used to represent a number of related concepts.

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Sign:  need / must / should / ought-to / have-to
Handshape:  "x"
Location: In front of you, off to the right side a bit.
Orientation: starts palm forward, ends palm down
Movement:  "x" hand bends downward from the wrist
Non-Manual Marker (Facial expressions and or body language):

Notes: 
The faster, "harsher," and more exaggerated you do this sign, the more of a "requirement" exists to "do something."
If you do this sign with a single, strong movement--it means need as in:  must, have-to, "not much choice in the matter." 
If you use a double motion it means need as in: ought-to, should, "some choice in the matter."

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"MUST or HAVE-TO" using a single motion:
Movement is downward.  Starts and ends in an "x" handshape. Movement is mainly in the wrist.
 

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"SHOULD, OUGHT-TO" using a double motion:

 

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MUST/HAVE-TO:

Let me give you an exaggerated example of this concept showing an extreme "HAVE-TO":

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