The biggest fault ... in my opinion ... with most children's entertainers is that they throw away the magic, as if it were an also ran.
In 1975 my mentor, Eric Sharp taught me to have all the comedy and gags early in the routine so they did not get obscure the magical moment(s). To my surprise Juan Tamariz taught exactly the same idea in his lecture on comedy in magic which I attended at the Isle Of Man magic convention in 1994.
Children do appreciate strong magic if presented well.
Here is a tip if you use the Silver Sceptre Rising Wand, the best vesrion currently available is from www.Practical-Magic.com
Tell the children you have been presented with a very special magic wand which is in the cloth bag. While you do the following say nothing: Rest the bottom of the bag on your left hand. With your right hand slowly slide the bag down the wand, scrunching it onto your left hand, thereby revealing the wand. PAUSE. - 75% of the time this will get an audible ooh or ahhh from the children.
So you are sliding the bag off the wand as opposed to removing the wand from the bag.