The patches are relatively easy to install but sometimes challenging to cut accurately. I typically would use an Xacto knife to cut accurate but small holes. In some cases, I had to make multiple cuts before I was satisfied. Some of the alignment on both patches and especially long tapes required a lot of time to line up accurately.
Wing Strut Mount Patch 
Gas Sump Drain and Brake Lines 
Door Patches 
This template was used to cut the patch around the tail section 
Wheel Strut and Water Drain Patches 
Patch across top of Window 
Overlay door patch. 
Below the door patches 
Overlay door patch
Time Spent- Sanding: 28 hours, 30 minutes