Hi Gerret,
As long as the dimensions are reasonably correct, it’s all you need to prove whether the shades will work.
Here’s a copy of the model.
I replace your ‘paper’ copy of Google Earth with a proper image exported from Google Earth.
Altadena Site Plan.skp (622.3 KB)
I also set the UTC Offset to your correct local time.
Current local time in Altadena is UTC-7 UTC … not -8
Handy time reference site: Current Local Time in Los Angeles, California, USA