Ballet Theme coloring book pages for children age 4-8

I want to create 35 high quality illustrations coloring pages on the topic of a ballet-ballerina world tour including 4 characters which repeat in the book and they travel to 4 countries where they will be meeting local dancers and performing also back home, for a total of 5 stages.  The main 4 characters are 3 girls and 1 boy and they will be traveling to London, Paris, Sidney, Tokyo and back to New York for their last performance.  In London they meet a new character a girl ballerina who introduce them to the culture and they perform, then they go to Paris and meet a local girl ballerina, for same dynamic, then in Sidney they meet a boy dancer and again same dynamic, then they go to Tokyo and meet another ballerina for same dynamic, and the 4 main characters return to New york for the final performance, after a glorious world tour.  The book may include 3 more images of ballet activities for kids as bonus.  The book is for kids ages 4-8.  The 4 main characters repeat in each destination, it is a group of friends dancers who do this world tour.    After this book, there will be more similar books to design as well.