Pretty but unusable as an adult

I dont get it. Maybe most of the good reviews are by parents. I bought this thinking it would be a relaxing, fun thing to do a few minutes a day. But the only thing adult fingers can do is fill areas with the tools. There is absolutely no way to "color" and stay in the lines. Its a mess. The pictures are simply too small. And as many people have mentioned, theres mo way to make them bigger. I wish I hadnt spent the money on this.

Rondadon about Monster Coloring Book