Coloring pages are a great way for kids to learn about the different ninjas and their skills. Plus, it's a lot of fun! Here are some tips on how to get started:

1. Choose the right coloring pages. There are tons of Ninjago coloring pages at https://ausmalbilderkinder.de/ninjago/ available online, but make sure to choose ones that are appropriate for your child's age and skill level. If they're too difficult, they'll get frustrated; too easy, and they'll get bored.

2. Use the right colors. Ninjas typically wear black and green, so those are the colors you'll want to use most often. However, feel free to experiment with other colors as well - after all, it's YOUR artwork!

3. Be patient. Coloring can be relaxing, but it can also be frustrating if things aren't going the way you want them to. Take your time and enjoy the process; don't worry about getting everything "perfect."

4. Have fun! Coloring is supposed to be enjoyable, so make sure to choose pages and colors that you (and your child) will enjoy. With a little practice, anyone can be a ninja in training!