Guidelines that apply to all work:
Use reliable sources of information (see below)
Cite ALL your sources; MLA format
Use Creative Commons images and cite them, or create your own images and take credit
Tools for creating & editing images:
PicMonkey - no login, save image before close
Tools for presenting what you know:
Discovery Education Board Builder
Make an eBook using Google Slides
Storyboard That - create comic-style storyboards
Tools for creating animation/video presentations: