Here are my GD tips in very shortened form:
With babies or with any child where there is a safety issue:
Physically intervene Gently to prevent the child from doing something that she should not.
Use words to explain and guide but not to prevent
For example, when baby reaches for the stove you gently move them away and say "no touching that could hurt OUCH"
you never expect words to control the behavior of a baby or young toddler.
With a toddler when safety is not an issue:
Tell the child what you expect and why. If your words do not work to prevent unwanted behavior or to achieve desired behavior physically (gently) help the child to do so (e.g. tell your toddler to get in the car, explain why it needs to be done, if they don't phyically move them)
With an older child
Tell the child what you expect and why. Repeat once. Stand and wait for it to be done. If the child fails to do as asked state that expectations have failed to be met.
For example, you tell your child to clean up his toy cars because a baby is soon coming over. Child refuses. After first waiting for it to happen (with the demeanor of one waiting for a bus that is late), if it needs to happen do it yourself and state:
I"It was your job to clean up your toys. The baby could have been hurt by them so I had to do it when you refused. Next time I expect you to do it when I ask."
NO OTHER CONSEQUENCES. This is the 'strict' side of GD. Others can give you the more "consensual side"
With babies or with any child where there is a safety issue:
Physically intervene Gently to prevent the child from doing something that she should not.
Use words to explain and guide but not to prevent
For example, when baby reaches for the stove you gently move them away and say "no touching that could hurt OUCH"
you never expect words to control the behavior of a baby or young toddler.
With a toddler when safety is not an issue:
Tell the child what you expect and why. If your words do not work to prevent unwanted behavior or to achieve desired behavior physically (gently) help the child to do so (e.g. tell your toddler to get in the car, explain why it needs to be done, if they don't phyically move them)
With an older child
Tell the child what you expect and why. Repeat once. Stand and wait for it to be done. If the child fails to do as asked state that expectations have failed to be met.
For example, you tell your child to clean up his toy cars because a baby is soon coming over. Child refuses. After first waiting for it to happen (with the demeanor of one waiting for a bus that is late), if it needs to happen do it yourself and state:
I"It was your job to clean up your toys. The baby could have been hurt by them so I had to do it when you refused. Next time I expect you to do it when I ask."
NO OTHER CONSEQUENCES. This is the 'strict' side of GD. Others can give you the more "consensual side"