Theatre Research International publishes articles on theatre practices in their social, cultural, and historical contexts, their relationship to other media of representation, and to other fields of inquiry.
For ideas, you could scan some scholarly theatre journals such as the following sample of journals available to you online:
PAJ offers extended coverage of the visual arts in addition to reviews of new works in theatre, dance, film, and opera. Issues include artists' writings, essays, interviews and dialogues, historical documentation, performance texts and plays, reports on performance abroad, and book reviews.
Theatre Survey is chartered by the American Society for Theatre Research as a theatre history journal. Its theatrical and historical orientations are broadly conceived. Performance-centered and historiographic studies from all points across the historical, cultural, and methodological spectra are welcome.
New Theatre Quarterly provides a vital international forum where theatrical scholarship and practice can meet and where prevailing dramatic assumptions can be subjected to vigorous critical questioning. It shows that theatre history has a contemporary relevance, that theatre studies need a methodology and that theatre criticism needs a language. The journal publishes news, analysis and debate within the field of theatre studies.
"For more than thirty years Theater has been the most informative, serious, and imaginative American journal available to readers interested in contemporary theater...Its special issues have covered many topics: theater and social change, children's theater, Soviet theater, theater and photography, paratheater, theater and revolution, and theater and the apocalypse."
Asian Theatre Journal is dedicated to the performing arts of Asia, focusing upon both traditional and modern theatrical forms. It offers descriptive and analytical articles, original plays and play translations, book and audiovisual reviews, and reports of current theatrical activities in Asia.