This is a massive scientific undertaking. Here’s hoping the lessons learned from the Hubble launch aren’t repeated for this telescope. The telescope will travel a million miles after launch, making repairs significantly more difficult (née impossible). Even after it arrives at its destination, the telescope will have to unfold and cool over another month before it is operational and we will know that it will work as expected.
If you want to keep an eye on the Webb, check out NASA’s live camera view of work as it proceeds on the telescope.