How to teach a yorkie dog to sit pretty or beg?

: How do you teach a yorkie to “sit pretty”/ beg?
I keep trying to teach my four month old yorkie to “sit pretty” but she either stands on her legs or falls over after I let go. I’ve tried to tilt her head back when she’s sitting but she lays down and rolls over. I really would like her to learn this trick she already knows sit, play dead, high five, shake, lay, roll, jump, speak, and say “I love you”. Any suggestions on how to get her to do it?

Answers and Views:

Answer by Mika
This is a great video for training sit pretty/beg.
https://www.youtube.com/user/zsianz1#p/c/CC0839BB710C7913/7/Xr4FkHF7xEE

If you aren’t already familiar with clicker training I highly recommend it. You can train without it, but generally it really helps speed up the learning process.
https://www.youtube.com/user/kikopup#p/search/0/_wv1uvvqaSw

Here are some other fun tricks you might like.
Cross Paws: https://www.youtube.com/user/kikopup#p/u/39/aLqmmn7iBVo
Take a bow: https://www.youtube.com/user/zsianz1#p/c/CC0839BB710C7913/1/6TB8sCZQoWw
Jump through: https://www.youtube.com/user/kikopup#p/u/19/br3nYFDGeWA
Feet on mine: https://www.youtube.com/user/zsianz1#p/u/51/cNCTTWSAHHE

And if you need inspiration for more tricks, these are amazing examples of what you can accomplish with positive reinforcement and clicker training!
https://www.youtube.com/user/NanaBorderCollie#p/c/BDB697EAC4908863/0/q8FfNQ_E0l0
https://www.youtube.com/user/snuggliepuppy#p/a/u/1/0atefssLylM

Best of luck with your training!