The phrase "agree on a design" is correct and usable in written English.
You can use it when discussing collaboration or consensus regarding a specific design or plan in various contexts, such as projects or creative work.
Example: "After several meetings, we finally managed to agree on a design that satisfies everyone’s vision."
Alternatives: "reach a consensus on a design" or "come to an agreement on a design."
If we don't agree on a design then we know we're not there yet.
It took two and a half years for Bosnia's Muslims and Croats to agree on a design, just for their bit of the country.
But the two teams — despite both being led by French engineers — could not agree on a design, people familiar with the matter said.
It took two years before the National Cancer Institute and its researchers could even agree on a design for the large new American study that will test the idea that many women might safely forgo chemotherapy.
The imbroglio earned a public admonition from Gov. George E. Pataki, who gave the sparring architects until Dec. 15 to agree on a design for the Freedom Tower, the pinnacle of the new World Trade Center.
Yet what is officially a collaborative effort has struck many people as more of a brawl, so much so that Gov. George E. Pataki has set a deadline of Dec. 15 for the warring architects Daniel Libeskind and David M. Childs to agree on a design.
They have agreed on a design contract with Tchibo that will run parallel to the company's first collections.
Mr. Osler hired Mr. Kogan immediately, and by March they had agreed on a design — a 2,700-square-foot 2,700-square-foot 2,700-square-foote made up of two-bedroomnd-concrete boxes, one suspended over the other.
The Ministry of Defence has agreed on a design for an Arctic Star medal to recognise the bravery and service of those who took part.
The Ministry of Defence has agreed on a design for an Arctic Star medal for those who took part in the mission which Winston Churchill described as "the worst journey in the world".
The Commission had trouble agreeing on a design with Mint Chief Engraver John R. Sinnock, and asked Philadelphia artist John Frederick Lewis to submit sketches.
