
Taking a step back might work with a big dog but never found it to work with my Beardies which were unlike todays beardies always shown free standing..
Stepping towards a small dog will make it get up & it's then that you give the stand command, bit like distane control in obedience & you rarely have the room in cavalier classes to step backwards
The trick with treating rather than toys is you can use titbits in the ring & playing with a toy in the class can be frowned upon(my boys get their squeaky mice after they have been seen on their individual as a special reward, but never ever when the whole class is showing)& eventually you will be able to treat only when she is standing 4 square as required in Cavaliers, ears alert making the head look as flat as possible between the ears(meaning raised at the base) & tail wagging looking alert & also being responsive to the judge as well as handler which is something else you will need to train for.
Free showing quite small dogs is not as easy as showing bigger dogs as I have found I had to change my training slightlly from my BCs & Beardies, neither of which are expected to keep their tails wagging, good job that cavaliers are usually such happy dogs as atanding whilst the judge looks at the other 30 + in the class can be hard work.
But then I've only been showing Cavaliers for 12 years so I'm still very much in the learning stage