Answer:
The child seems like they aren't good enough to do whatever it is the mother insists she's good at. The mother thinks highly of her child, and knows her child can do anything she wants to. But the child is just not confident.
Based on the line given above from the poem "Tattoo" written by Gregg Shapiro, the poetic device or technique used in the line is metaphor. Metaphor is a poetic device that uses comparison between two unlike objects. In this line, "We" is being compared to "continents" that are worlds apart.
He’s trying to express that the world is full of evil and wickedness