Project 1 : Lion's face

Project 2 : Colored swan

Project 3 : Curved owl (TripAdvisor style, w/ Curvature Tool)

Project 3 bis : Curved owl (Tripadvisor style, w/ Pen Tool) 

Obviously from the very result I had, I tend to prefer the Curvature Tool, since it's easier for me to draw shapes (sadly my drawing skills are no great :/).

Project 4 : Freehand drawing & bushes