The furthur this thread goes the better the advice gets!
Firstly my initisal observations and stereotyping of you.
You look 'creepy', unsociable, non alpha male, and as though you dont get laid.
sory for the harsh critisism but it is necassary to know your faults before a change can be made. Also i dont know much more about you other than those two photos and this thread!
What seems to be the cause of a bad picture to me is:
1 - bad personal presentation.
This includes subtleties such as your display of confidence, posture, your smile - this shows your probably not enjoying yourself that much during that photo. your eyes are not displaying any character in particular again negative as that can give the viewer a perception of your personality and you display of energy - i cant feel any positive or negative energy displayed from you just emtyness. this will make people think that you're boring.
2 - Bad sence of style:
Look at someone who is your hero. A typical alpha male. infact look at anyone who you percieve to be alpha male or a person who regularly gats laid and think... what does this person wear that i do not? and change that about yourself. The fact that you wear conservative and "not out there" clothes suggests to me that you are rather shy or that you are not a risk taker. Wear somthing out there and differant that seperates you from the rest of the crowd. but guess what you will need confidence for that and you must believe in yourself.
3 - Bad social presentation.
your taking a photo from your friken webcam! this tells me that you dont get out much! go and purchase a camera they are fairly cheap now days! go out socialise. It doesnt matter who you take photos with. family friends, pets, work associates. as long as your displaying energy and enjoying yourself during the shoot!
OK again appolagies for the constructive critisizm but unless i explain to you what your displaying in your picture (through my perspective) you wont understand whay the actions mentioned above will seriouosly help you (and i dissagree with the tan. Its a plus but not necassary. im naturaly pale and i get arounmd fine)
1 shave your head. once i did just that to prove to myself that i could pickup when i looked completely ridiculous. In the end girls found itt HOT and loved it. mission failed. but i was happy to know that I can look good with a shaved head!
hit the gym! you dont need to be ripped or a bodybuilder, just present yoourself as a healthy and fit person. From what i see you do not look fit at all.
You look like you should wear clothing similar to neil strauss shirts and suit pants that sort of stuff. just make sure its stylish and not your boring blue working shirt.
enough from me for now. hope it helped!