The comment I wrote earlier was from my phone, so I did not see the picture properly. Now when I see the full size, whats wrong with the skin? If you mean why is it low quality, then you need to buy Private Military Company DLC by Bohemia Interactive, wich will put Survivor/Hero skins and quite a few more skins into HQ. Without DLC's all skins from PMC (Lite) and BAF (Lite) are low quality
Oh, and if you mean WHY do you spawn with survivor skin, I assume you have used the Humanity adding script wich makes you have Hero skin, and Above added into respawn system that if you have negative or positive humanity, you will spawn with the skin whatever humanity you have. To get survivor skin/bandit skin then simply use the Humanity -4900 or something cheat.
Look ain your game root directory, there should be a BAF and a PMC folder (C:\Program Files\Steam\SteamApps\common\arma 2 operation arrowhead\BAF and C:\Program Files\Steam\SteamApps\common\arma 2 operation arrowhead\PMC); all you have to do is to copy the content of the Addons folders inside the BAF/PMC folders into your main Addons folder (ex : C:\Program Files\Steam\SteamApps\common\arma 2 operation arrowhead\Addons).