O thank you, I will fix the cheeks, also the feet, but in the images I saw many edges that aren't in my model:
around the cheeks:
around the eyes:
I understand that 6 edges in the tail are a little bit more than the ones that are needed, but in the image appeared like 15 or more edges:
and also around the feet:
Please tell me how to fix those wierd edges that appear in the model, because in my blender they don't appear, I will do my best to better the model.
Thanks for the suggestions.