Hello, I will draw line drawings for your coloring book for kids or adults. I will draw both simple and complex images. I will use royalty free images,so you can use it for commercial use without any problem. You can also tell me which kind of line diagrams you want like animals, birds,fruits etc for kids or complex images for adults coloring book. I will charge only 5$ for 50 images. You can message me for any information, I am here to help you any time.