Hi Kazzy, well done and welcome!
To add badges to your signature, go to User CP, then Signature.
The badge code goes at follows (without any spaces)
: swhalf:
: sw1:
: sw1half:
: sw2:
And so on.
Club ten is : swclub10:
Slimmer of the Week is : swweek:
Slimmer of the month is : swjanuary: (just change it to whatever month you need)
Target is : swtarget: