I would like forumites to please help me with strategies for writing my literature study in such a way that it becomes a publishable piece.

My field is Social Science.

In the end I want to build a theoretical framework/model that can help the analysis of my study results (gaps and the contribution of my study)

Nobody can help you with pointers for your literature study, if you do not give us a clear idea about what your topic is. Further, regardless of whether we do provide suitable suggestions for the review, the quality and originality, methodology, results and contributions will ultimately determine how publishable it is.

You can perhaps search for existing literature on your topic on Google Scholar and make strong arguments, based on existing studies and then perhaps, frame your theoretical model and discuss your findings.

It's helpful to read 'how to' pieces by universities first. This is a helpful one that I used for an article which got published:

Thanks a lot for the advice Bloop,

Thanks a lot Nad75 for the useful article,