Claw Handshape
With spread fingers, the five fingers are bent in a claw. The symbol is white because the palms are facing the chest.

Middle-Joint Movement "Close-Close"
Dark dots over fingers mean that the middle joints of the fingers bend in a closing motion. Two dark dots means two "closings", or "close-close". In this case they are used to describe the motion of "scratching" like a bear.

Arms Crossed
There are arm lines extending from the hands. They are crossed. Normally we do not write the arm lines. They are only written when it is necessary to show something unusual, such as "crossed arms".

Punctuation End of Sentence
A thick line at the end of the sentence means that the "thought stops here". This can be compared to the "period" at the end of a sentence in English.