What makes a compelling, potentially-fundable grant proposal?  In the first part of this workshop, NSF program officers will provide a quick overview of best practices and common pitfalls.  In the second part, program officers will host mock proposal review panels in small groups, allowing participants to experience how proposals are evaluated and what makes a successful proposal. Participants will be provided with two proposals to review, along with instructions, ahead of the workshop.  This workshop is limited to early-career researchers, e.g., postdocs, assistant professors, or equivalent.