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