Full time professional XML freelancer with a university teaching background. So I know all about assignments and how to professionaly answer them. Over 20 years of full time XML (SGML at first), XSLT, XSL-FO, XQuery, DTD, XSD, Schematron, RelaxNG, XProc, .... The only freelancer on freelancer.com that succesfull reached the XML level 3 exam.
My bid is a wild guess because you did not attach the actual assignments... some more info would be helpfull