Topology Drawing is a useful practice to do before begining the 3D Modelling. It allows you to work out the mesh for your object, based from 2D drawings.
Here I've overlayed a line drawn rough estimate on top of my 2D character design.
Overall, if this topology drawing is anything like the final model, then it shall be successful and able to be animated well. However I've highlighted Red, in this drawing that there is an N-gon around the mouth. I will need to change the mesh in order to avoid this as they can become challenging on curved objects, artifact and shading errors can come up and it will show during animation.
The orange highlight I have is merely pointing out that there is too much geometry on the arms which is unneccesary, so I can reduce this to help render times.