Great walkthrough, but it would be better if the collectables were highlighted in bold in the text walkthrough (like the luminaries are). It would make it a lot easier than having to scan every single word of the walkthrough to make sure I'm not missing anything or having to switch between the walkthrough and the collectable video.
Also in Act 3;
Operate the device so that the big ball with the ring around it has its shadow so that the ring is nearly touching the ground
It does not have a ring around it. This really caused confusion as the only planet with Abby rings isn't used until a few steps later. Thank goodness for the video.
Stoke me a clipper, I'll be back for Christmas... Whatever!