Are you daisy chaining the power input lines going into your graphics card? If so, I massively encourage you to get all 3 of those inputs onto seperate pcie outputs on your power supply’s end of things - assuming your supply has enough outputs to do so. Seeing as you have a 1000w supply, it should have enough pcie outputs.
Outside of that, your first build is a lot cleaner than my first! Great work, and happy gaming!
I suggest using the 12V-2x6 cable that your PSU comes with instead of that adapter for your GPU, much cleaner. Then you don’t need to worry about all those PCIe cables and you can just use the one.