(VERSION 2014)
There are so many web links on the Internet that promote How to write a better report (MUET report writing in particular). In fact, different set of questions require a specific know-how so that one will be able to write a decent report; or may be a much more better report.
To do MUET report writing, the focus should be given more on producing syntheses from the given stimuli OR providing relevant analyses. If one could NOT synthesise, JUST analyse. There is NO specific requirement for the candidates to write a number of syntheses plus some analyses, vice versa. The candidates may focus on either writing the analyses only or syntheses only. Bare in mind, synthesizing is much tricky. Reason being, if 1 synthesis statement is not relevant or wrong, it could in fact affect the rest of the syntheses in the report.
While the format is a lil bit the same as writing an essay (some say it is entirely different), MUET report writing emphasizes on writing what we find from the stimuli (visuals) given in the question. Hence the name “report” in its literal sense is actually a report, which requires some skills in writing.