“It's starting to come together.”
You're building a new house. The construction started a few weeks ago. A friend asks about how it's going, so this is your answer.
It's starting to come together.
"It's coming together" means "it's starting to be successful" or "it's getting closer to completion".
Use this phrase to talk about a project. It can be one of many kinds of projects:
- a school assignment
- a construction project
- a website that you're building
- a novel that you're writing
You can also say "___ is starting to come together" to talk about a project that's a little further away from being finished.
This is a good general-use phrase; it's neither very formal nor very casual.