How I sketch a facade in 3D using grease pencil in blender

Good job!!, the grease pencil tool is very useful, I just have one question, what is your configuration so that the line coincides with the origin where you start a new line? , why does it happen to me that if I turn the camera the angle of the line is incorrect or does not coincide with the adjacent line.

How can you use blender in ipad?

Hey, i was trying to learn grease pencil, but every time i was drawing out of the camera view it aligned itself to it, do you know why?

HOW!!!

Hey i like that MacBook case can you give me the name of that or amazon link.