Hello :)
Here's a little project I did for school, we had to design an alien explorer and his droid friend. I firstly made some silhouette and colors iterations for my two characters. Then made some compositions iterations too and proceded to sculpt my characters on Zbrush for the alien and Blender for the droid. With Mixamo I was able to rig my character that I later posed like I wanted to with the droid and some assets from Poly Haven. With the Blender render finished, I exported it on photoshop to work with it thanks to some photobashing.
Hope you'll enjoy this artwork as much as i liked to do it.
Character 3D model done on ZBrush rendered on Blender
Droid 3D model done and rendered on Blender