How do I UV unwrap a half sphere? Hello, I am a beginner in Blender and I have tried to make a ladybug for my project. I managed to model it, but now I have to add a ladybug texture to it. I heard that by using the "Smart UV Project" function, I can easily   add my Ladybug pattern to it. However, after doing this, my image started to distort. Now as you can see, the ladybug's patterns has gone really wrong and I don't know how to fix it, so is there any way I can fix this problem and make my ladybug work?
It will be hard to have perfect circles on your ladybug this way. You could do it several other ways, but here are 3 ways to do it:

1) DIRECT PAINTING


Unwrap your semi-sphere in Blender.
Prepare a red image texture in the UV/Image Editor
Plug the Image Texture node with your image in a Diffuse (and plug the Diffuse in the Output).
In the 3D View window, switch to Texture Paint mode and paint your black dots with a very steep curve brush.




2) PAINT A MASK


Unwrap your semi-sphere in Blender.
Create a 100% white texture and plug it in a Diffuse (and plug the Diffuse in the Output).
In the 3D View window, switch to Texture Paint mode and paint your black dots with a very steep curve brush.
Now change your node organization and use your texture as a factor in a mix between 2 Diffuse nodes: one black and one red.




3) TRANSFORM A PLANE INTO A SPHERE

You could also create a plane, map your pattern on it, transform it into a sphere with some Simple Deform modifiers / Bend mode, then cut the sphere in half: How to animate morphing a rectangular plane into a sphere