Making animal sketches with markers and color pencils

Last may I went to Vienna during the Constitution Day break (in Norway depending on which day of the weel the 17th of May falls, you can get a lot of "free" vacation days).

Anyway, this year I traveled for the first time to Budapest, Bratislava and Vienna. During the Vienna leg of the trip, while visiting the grounds of the Schönbrunn castle, we discovered the zoo and decided to check it out on a whim. Unfortunately the zoo was full of people (and I always get performance anxiety while drawing outside) so I just took reference pictures and videos to draw later.

This is my process to sketch my favorite animals: