As all of you know that seoclerks is the most earning from freelancing site on internet, so I'll tell you some tips to get more and more sales as level 1 seller
Provide services at low price
As you are still newbie to the sales you have to offer cheap services in the price, but good in what you'll do, doing this will gain you permanent buyers which buy from you many times, and you have to be high quality seller so you get positive reviews in your first sales, because when somebody see your positive review they also buy from you.
Be friendly with your clients
Being friendly with the clients is a necessary part, never use any bad words with them because they can make a ticket against you and you account have a refraction, try also giving your clients better suggestions for their work. Also try to give some gifts as additional thing to their order so you gain a positive review.
Be active on the forum
Try to participate more and more in the forum, so many people see your posts and also check your sales, the more you get active the more people see you, try it.
Ask for a recommendation
If you see a buyer very satisfied with your work ask them for writing a recommendation which isn't lower than 30 words, this recommendation appears in your profile so any visitor to it will see you are a good seller and then buy from you.
Check the WTB section
This also works, check daily the want to buy section and bid in a medium price so the buyer choose your bid and buy from you.