How to add the Asterisks for identifying mandatory fields.

Just to be clear, if you want one (1) asterisk, then use this markup:

<span style="color: #ff0000">*</span> Field Name 

If you want to use a smiley face, use this markup:

<span style="color: #ff0000">&amp;#9786;</span> <b>Give Irvin a 1000% pay increase</b>