Use one playable result as your first milestone
Consider a project owner who wants a key-and-door puzzle in a Roblox lobby. “Build my puzzle game” does not tell a scripter how to estimate the work. The first milestone can be narrower: one player collects a key, receives clear feedback, unlocks one door and reaches an exit. The existing place and graybox are supplied by the owner. A new shop, persistent inventory, map expansion and custom animation are outside this milestone. This is an illustrative brief, not a claim about a completed RoTalent commission.
Write down that starting state before inviting quotes. Say whether the key model already exists, where the exit should be, what devices matter and who can provide access to the place. If those details are unknown, ask for discovery or a prototype first instead of treating assumptions as fixed requirements. The free project brief worksheet at /project-brief lets you record and export these decisions without signing in.
Turn the feature into checks both sides can run
A useful acceptance check names an action and an observable result. Start Studio with two test players. Player A collects the key and sees confirmation; Player B does not receive the key. Player A can unlock the intended door, while Player B cannot. Decide whether unlocking is personal or shared and record that decision before production. Decide whether keys reset on rejoin; do not assume persistence is included.
Ask the scripter how the server validates a door request rather than trusting a client flag. Include repeated input and missing-object behavior in the review. The exact architecture is the creator’s implementation choice, but the agreed behavior should be clear enough for another team member to test. Record failures with reproduction steps and expected versus actual results instead of sending only “it is broken.”
Make the handoff part of the quote
For this example, list the server logic, client feedback, configuration, organized editable source and short setup notes. Identify any third-party modules and who checks their permissions. Agree where the files will be delivered and who owns any required uploads. A demonstration video can show progress, but acceptance should also include opening the delivery in the intended Studio place and running the checks.
For a UI designer or builder, use the same approach with different evidence. Name screen states and device sizes, or the approved graybox, collision checks and walkable route. The principle is to quote the result plus the handoff, not an attractive preview with undocumented integration left to someone else.
Separate corrections from a new request
If Player B can unlock a door without the key, that fails the agreed check and belongs on the defect list. If the owner later asks for ten key colors, an inventory store and saved progress, that is additional scope. Ask for a revised estimate and approve the change before work starts. Include a review window, one person who collects feedback and the revision rounds covered by the quote.
Use the same distinction for visual work. Fixing a collision error differs from replacing the approved art direction. Keep the agreed references and the accepted version together so neither side has to reconstruct a decision from scattered messages. If a dependency is late, record how it affects the delivery schedule.
Agree on money explicitly
Record a currency and amount or budget ceiling, payment schedule, fees, cancellation terms and who accepts each milestone. These are decisions to make with the creator; this example does not suggest a market rate. Revenue share depends on future results and should be identified separately from guaranteed compensation. Use the actual payment flow offered for the deal rather than assuming that a completion checkbox holds funds.
Before starting, read the whole brief aloud as a sequence: supplied materials, one playable outcome, exclusions, acceptance checks, revision allowance and final handoff. Resolve every item marked “to agree.” Compare candidates using that same version, review relevant portfolio evidence, and begin with a milestone small enough for both sides to evaluate. Keep the finished brief and the accepted quote with your project records.