I have trouble making roofs

[fourpapa1]

You can use ResizeAllign to connect those small gaps.

Stravant - ResizeAlign - Roblox

If you want to redo the curvature, you can use Archimedes:

Archimedes (v3.1.9) - Roblox

I have a guide on curvature here which you might find useful:

FP1's Guide to Building Curvature in Studio

Fourpapa1’s Guide of and Relating to Building Curvature and Bevels in Studio A prevalent issue in the Building Support category is the common occurrence of receiving answers like “use blender” to simple questions about building in studio. For that reason, I introduce the first of what may become a series of comprehensive build guides for new and intermediate builders alike. My portfolio can be viewed here: Fourpapa1 - Builder Portfolio For this guide, I will focus on aspects of or relatin…