Advice on how to replace thermal paste on CPU

Hi, my Razer Blade 15" Studio laptop has been running hotter and hotter as of late. I was able to open the back and extract quite a bit of dust from the bottom fans, which helped my issue somewhat, but not nearly as much as I would have hoped.

Since I've been using if for over 3 years now, I figure it would be wise to try applying new thermal paste to the CPU (I'm not sure if the discrete graphics card inside would also have thermal paste to replace, but if so then I'd guess it would be useful to replace that as well).

I have some experience following pre-existing iFixit guides, but certainly wouldn't know where to start on this task given that I can't find any information online about how the internals of this machine are laid out. If it would be useful, I can supply a picture of the inside after removing the back panel.