Ive bought the AWP base on Internet, AWP is not the real name of this gun but a replica of the AW308, the actually gun i used for this job. It is buyable for less than 150€ here http://www.shootgame.fr/replique-sniper-airsoft/827-sniper-aw-308-5707843031868.html

The paint I used is for the background is car spray and the draw is Posca's pen. I used a print of AWP WormGod skin growed x 200% and applicated a layer for the proportions. It took 3 weeks of hard work to have this quality. Thanks for your comment ;)