some disappointments

My son received this kit for Christmas and we had the same disappointment as others. We thought he was missing three-quarters of the elements. In fact, they are well hidden in the compartment underneath. We discovered this after searching the internet. In addition, the notice explaining how to open the compartment that is inside of it. Once the problem is solved, my son is excited although I find that the quality of pens very average and the color thereof is not very wise (orange, purple, blue, green).