A proposal is a persuasive piece meant to convince its audience of the value of a research project. Think of the proposal as the pitch and the paper as the finished product.
It is also very important not to be too vague. Don’t be afraid to make a strong statement. If you look at the above examples, each of them makes a specific point about the topic. Another key to crafting a strong thesis statement is making sure that your thesis is arguable. That doesn’t mean it’s controversial or particularly opinionated, but it does mean that someone could disagree.
Spend time going over the assignment. Look at everything your instructor has provided you with. Carefully read the writing assignment, prompts, grading rubric, or any other materials you’ve received. It might even be helpful to highlight and take notes on the assignment.
Finally, don’t ignore information. You can find an article that says anything you want it to say. Did researchers recently discover that octopus DNA is made of alien DNA from outer space? Are the spires on the Cinderella Castle at Disney World removable in case of a hurricane? Did a cook attempt to assassinate George Washington by feeding him poisoned tomatoes?
You don’t have to read in-full everything ever written about your topic. In fact, you probably can’t. Get comfortable reading through things quickly. Learn how to identify key points and arguments without getting bogged down and reading every word.