There are many freelancing sites where an individual can pick up or grab some floating job and bid for it and complete it and get payment. There are variety of jobs and tasks in the up work and slowly and gradually one can complete them and make a place for oneself by mentioning that in one's profile.
There are some jobs where scope of earning is mediocre while some jobs are a bit difficult and pay more but everyone cannot attempt or undertake it. So, one has to mention in one's profile all those jobs where one has more proficiency so that the employer or the customer can allot that to the person confidently. Apart from that one has to also mention other general things in the profile as number of working hours per week, strength areas, past experience and past statistics which is of course a vital component of the profile.
It also makes sense to become a member of the 'Talent Cloud network' which is an Upwork Enterprise client's private group of professional freelancers and agencies. Working with an Upwork Enterprise client makes oneself visible to the job hirers whenever they want to hire someone with that common skill.
There is a big crowd of workers or freelancers in the upwork site and that is the reason that many tasks are taken up by the established and highly capable players there and it becomes difficult for the new persons to grab a paying job or task from there easily.
If you want to update or modify your profile in upwork to attract the attention of the people for getting more work then I would advise you to go through some of the outstanding and particular profiles of some successful workers in that platform. You can go to this link
and get some of those impressive profile pages which are compiled by one internet author.