Aether
I would suggest to just run dungeons. Try and find a dungeon running guild on your server (so you don’t get yelled at for being inexperienced and/or dying for being undergeared) and proceed to gear up that way. It’s a slow method but you can strategize your needed dungeons to get your appropriate gear. Just start by figuring out what stats you want then figure out what dungeons have them.
Figure out what stat combination you want
Figure out where to get them
You can also do Karma, but that’s somewhat expensive for new 80s and also requires timing via your worlds temples.
I wouldn’t suggest making and selling something like Aether. If someone wants a skin like that, they are more likely to make it themselves since it’s cheaper that way.
As Esplen suggested, doing dungeons is the best way for a new player to get gear, through either dungeon tokens or the gold you’d make.
If you don’t take my advice though, here’s a couple websites to help you figure out the price/profit of making and selling a special skin:
Cost Calculator
http://www.bravevesperia.com/
Trading Post Data
http://www.gw2spidy.com/
Nemata Sapshield – Dragonhunter
Lillian Estre – Tempest
Thanks for your help guys. I think you’re right, I was looking for a short cut where they don’t really exists. I need to start running some dungeons.