I have an Upwork account myself and the best advice I can give you is to take as many of the tests Upwork offers. You have the option of picking and choosing which test results are viewable on your profile, just in case you do not perform as well as you wanted on your first attempt. Ask your satisfied customers to post feedback on your profile. Additionally, you can upload examples of your work which go a long way in lieu of certifications. My experience has been that the majority of those hiring on Upwork are looking for quantity and the lowest price possible, formal education and certifications are secondary considerations.The other piece of advice I would offer, though unsolicited, is this: While Upwork is a convenient and fast way to pick up work, you are paying an exorbitant 20% to the site while being paid pennies on the dollar for the work you complete. I am not completing knocking Upwork, I was able to find a long-term editing position that pays quite fairly there BUT you are worth so much more than the majority of project owners/job posters are willing to offer. With a little time and effort, you will be surprised at the opportunites available to you online. Try googling any of the following, making certain to include the quotation marks, no commas are required: u201cgraphic designeru201d u201c$u201d, u201cwork for usu201d u201cgraphic designeru201d u201c$u201d, u201chiring graphic designeru201d u201c$u201d u2023 you get the idea. Join some online forums dedicated to the field you are in, you will be surprised at the tips and tricks you will pick up from other users, such as here!