If you're noticing a higher level of independence in your child and increased positivity toward herself ("Mom, look what I can do!"), she's ready to give potty training a try. You can probably predict by now when your child needs to use the bathroom, so start by having her sit on the potty based on that schedule. Encourage your little one's efforts with lots of positive praise to show you're proud of her too.
She's pretty darn proud of herself.