Thx all!
Did some modifications, and resize a bit the second dino :
http://cyroz2000.free.fr/sl/dino/wip_002.jpg
Another view, another angle ....
http://cyroz2000.free.fr/sl/dino/wip_003.jpg
I also tried another pose for the first dino :
http://cyroz2000.free.fr/sl/dino/wip_004.jpg
http://cyroz2000.free.fr/sl/dino/wip_005.jpg
I don't really know what will be the final shot, I like the close up and the last one... but for now, I'll work more on the textures of the second dino, and on the environment if possible..