There are many sites in the web like fiverr, up work, amazon turk, appen, click worker, figure eight etc where tasks are available but one has to be quick in grabbing those tasks and completing them as per the satisfaction of the site or the person who has floated the task on the agreed price. So as regards your question regarding the profile betterment, I have to say that after picking certain jobs and completing them one would automatically have a good profile in the site as evident from the corresponding score or earnings. That is the only way to progress ahead. Another technique which many people apply while mentioning their profile in the particular site is that one has to mention the accolades earned elsewhere so that the people seeing the profile can trust the person for solving their problem or taking up the task with more confidence.
For example in your case you can very well mention there in your profile that you have published so many technical articles in the leading Indian educational site and answered so many queries etc. That helps significantly.
Another thing that I can suggest at the present juncture is one has to make a niche place in such sites for a specific work and not for all sort of works so that he gets that stamp with his profile and gets more such jobs or tasks online riding on that reputation. The site editors generally monitor that and facilitate such opportunities to the concerned person.
Knowledge is power.