Note: You can use your "eye gaze" to help identify the person you are
It is common to glance over toward the person to whom you are referring.
Your second question: How do I show possession with pronouns such as: yours, his, hers, mine, theirs, etc.?
Answer: You point your palm toward the referent. For example: "YOUR or YOURS" is indicated by pointing your palm at a
person. The sign looks similar to that of a police officer signing "stop" while directing traffic.
To sign HIS/HERS/ITS you would do the same sign except you would do it off to the side.
The sign THEIRS if referring to a specific group would be signed the same as HIS/HERS/ITS.
The sign THEIRS if referring to two or more separate individuals would use the same handshape and palm orientation but the
movement would start slightly off to the side and then sweep further to the side. The "sweeping" movement would add
plurality to the sign.
Have a nice day.
For more discussion on this, see: