I am no pro by any means, but I know how to earn money in this game! (I paid my first mount selling only Bronze Tubes for 1 g each!)
You can now earn an insane amount of money thanks to daily quests and in a relatively short "farming" time.
I do this because I have 2 level 70 characters and a lvl 60 warrior.
2 of them have an epic mount! this is what I do:
1) I do 4 times the 2 daily quests you have in Skettis. Each quest gives you 11,99 gold (4 times, that is each quest with each of my chars).
2) I do 2 times the 3 easiest quest in Ogri'La near Vortex Pinnacle and at Skyguards camp. Each of them also awards you 11,99 gold. (I do them 2 times using the 2 chars with epic flying mount)
This is 14 quests each day, for 167,86 gold. This is 4035,8 Kaching! gold in 30 days!
When you're honored with Skyguards (a copule of days will be enough) you'll be able to fly from skettis to ogri'la FOR FREE using a nether ray. this is not a good information but its still information right?
Of course you can aldo do all Netherwing daily quests in Shadowmoon valley, but they give you less money and are slower and harder, imho.
Of course this can be done if you have several alts. But almost all people have at least 1 alt and even with 2 chars only it's 10 daily quests that gives you 119 g each day and 3570 gold each month! This can be hard for many people as my friend. What you need for do all the 10 daily quests is:
Flying Mount
"Attuned/Attetuned I donnu what its called" with Ogri'la and Neutral with Netherwing
Finally, quest rewards and drops can be sold for another 20 golds each day (but you can save them for consumables and repair)
This is my actual income: well over 5000g each month. When I'll have another epic mount, i'll start doing 3 more dailies in ogri'la and so on!
Farming motes, mining, gathering herbes. But i've switched to Mining Engineer instead of Herbalism.
I Hope this will be very helpfull and will help alot of players to get their epic mount. Im still fightin with mine on my second lvl 70.
Good Luck and earn Gold!