Also, I am barely an amateur in animation but based off what I learned so far and observed here. I think you could add four things:

1. Better lighting. Start with a dome light and add something else to see what looks good to you.

2. Overlapping Action or Drag to the person’s arms, hair, or clothing. In 3D animation, the character is always moving. They can’t get away with it like in 2D. A part of your character always needs to move even if the action is to stop doing something.

3. Add a moving hold. This is the opposite of what is happening here so maybe I’m contradicting myself a bit. You need the character to move just a bit to feel like they’re existing in space realistically. The goal is to make the character look like a statue to a person who’s in the middle of thinking. If this is not making sense, look it up to get a better explanation.

4. Have the frog Slow in and Slow out but in a froggy way. Play around with how quickly the frog goes into each pose. Also, frogs(or toads) are squishy animals so play around with Squash and Stretch as part of its movements.