I think the instructions for the Power Station looks great!
I have some recommendations for the Ore Refinery & Cargo Carrier. For the Ore Refinery, the original design doesn't seem to be able to fit a single ore in, which was why I made the loading area in mine a little higher & wider. It's ok if u want to keep the original design, but it would be better to let it have some function
For the Cargo Carrier, regarding the front part of the vehicle, instead of using those 1 x 2 plate hinge w.stick, maybe you could use the other 1 x 2 plate hinge w.stick 3.18. This way you only require a single 8 x 6 plate for the loading bridge, but you'll need 4 of the 1 x 1 plate holders instead of 3
And try to use LDD Extended mode instead because it has the teal colour & patterns that Rock Raiders usually use
Other than that, great job on making these instructions