Do not include lengthy research papers. You're asked to identify a few of the problems you've encountered in writing one particular research paper, then to focus on the one problem you felt was the most significant. Make sure that what you write reads like a focused, developed, multi-paragraphed essay and that you refer to one paper that required research which you include in your proficiency portfolio. Its purpose is to demonstrate your skill at writing a timed essay. A minimum of two trained graders other than your teacher will judge your portfolio's proficiency.
Portfolio demonstrates ability to plan, focus, organize, develop, revise, and document essays.
Mechanical errors do not impede reading. Email me for more information.