Proposal Review Memo
Your job in looking at your assigned Proposal Memo is to read it with an eye toward whether you find it convincing. To give relevant feedback, you will likely need to read this more than once.
Place yourself in the position of the assumed audience. If it's an Internal Proposal, try to situation yourself as a decision-maker at the company. Obviously this will put more pressure on you to know something about the organization, so you might have to check sources and read up on the company or non-profit in order to judge.
As you read, start by evaluating the overall proposal. If anything seems unclear or unconvincing, you should say so. If the reasoning is logical and convincing, say so. If, as it is in most cases, a mix of convincing and non, then arrive at a balanced eval. But you should take a somewhat skeptical stance if only because that's what we can expect in any business environment. You must be prepared for people to poke holes in your argument, so this starts by taking on a skeptical role for your reader--without being mean-spirited or snarky about it.
As you write your evaluation, provide clear reasoning for your judgment. As the length suggests, the evaluation should be as long as the proposal memo itself, so you will not be able to get away with sweeping generalizations. This is good. This is a problem. You have to provide concrete, specific reasons for your judgments.