Generally you don't make many errors Luciano. But to my eye, the mane should follow the back of the neck of the one closest to the camera and maybe intersect loosely with the one in the rear. Great source choice by the way.
What's up with so many facebook users using photos of giraffes on their profiles? Did giraffes get too social lately and start using facebook? The answer is a new riddle that has been circulating on facebook - those who accept the riddle challenge but fail to give the right answer agree to use any giraffe picture as their main profile photo.
Photoshop giraffes using facebook one way or another.
Photoshop this giraffe image (click to download) any way you wish. Some examples are: merging this giraffe with some other animals, showing creative ways to use this giraffe image in advertisements, art, putting this giraffe into some unusual environment. These are just some ideas.
Many thanks to Michal Zacharzewski and Stock Exchange for providing the source image.