Greetings friend, what a nice experience with your niece and when it comes to drawing all children want Very good that you allowed the child to draw too, you have very good communication with your nephews.

Excellent drawing they made, they worked together where they could be creative, the children have excellent ideas when drawing.

Your cake and balloons, the butterfly, the tree and the cat are beautiful. Drawing them helps the child's motor skills, creativity and good relationship with his family.

Excellent post I wish you a happy day