Can yall help me with this riddle??

First picture is a dog.
You take off the g.
It now says “do.”

Second image is a boy.
You take off the b and replace the o with a m.
It now says “my.”

The third image is a bed.
You replace the d with “st.”
It now says “best.”

The answer to the riddle is the sentence, “Do my best.”

That was fun! I want more! Haha

Speech is the way to go and something u think about given