I\'m gonna echo reverend here, and also add that painting fast for ebay isn\'t neccessarily going to get the best result for you.
If you could paint to a score of an 8 in two hours you\'d really have the means to make a decent turnaround on your purchase outlay.
What I\'d suggest is that you should work on the means to make certain areas quick (ie drybrush metals {*}) and work more slowly and accuratley on things like skin tones. One big suggestion do the eyes before you paint the rest of the skin sets them in properly and realy helps hold the figure together.
{* Yes I said drybrush, while it is sometimes seen as a beginners trait it is by no means as simple as that. Drybrushing is a technique that can produce excellent results when applied properly.
I often use it for Orks like this:
GW Boltgun Metal, Drybrush in circles over the areas I want metal.
Vallejo Airbrush Chrome, Smaller drybrush to accentuate details. (as this is a far finer pigmented paint it seriously does the business.)
Wash over with Vallejo Black Glaze, when dry gives a great aging effect on the metal.