I don't consider myself to be the person to judge the works of others here and I haven't read a lot of your recent edits, but in general, I think you're doing a good job. Don't mind it if your edits get edited by me or someone else. That's just part of the process of the Wiki.
To answer your question about the Grenades/Mines article, that interface can't be edited in graphical view, but can only be edited in source code mode. You can open source code mode by the menu button at the top right of the toolbar. That multi-tab interface was left there by an editor who likes to use that type of layout (see the Payday wiki). Personally, I don't find that interface to be necessary, but I can't be bothered to change it.
Also, I am still on hiatus from this wiki. I made a temporary return mainly to finish a few small things that I had planned but didn't get around to doing so, and to review some of the anon edits that occurred in the last two weeks. This month, there was a huge surge of anonymous edits because DXMD was free on PS+ for this month, which resulted in much higher traffic than usual. With that now over, I will be resuming my break for a few months at least.
In the image you posted, the eyes and mouth are Delara Auzenne's eyes and mouth. Only Elizabeth's forehead and nose are shown. But since the eyes and mouth are not hers, I don't think it's an image that properly depicts Elizabeth.
I have watched that video frame by frame. Elizabeth's eyes and mouth are deliberately hidden. The first frame of that view cuts directly to Delara's eyes and mouth.
However, if you think it would be of value to have that image to show part of Elizabeth's face, we could place it in the gallery. But I would argue that it's too misleading for use in the infobox.
Is there a particular reason you named the helicopter page with DXHR/DXMD in it? I didn't see any other page for helicopter so I was thinking if there wasn't, it'd probably be easier to just keep it at Helicopter without all the games abbreviations.
There were already 3 other pages for helicopters in other games. Since Helicopter is a generic term, I thought it would be better to reserve "Helicopter" as a disambiguation page. I've just added that page, actually.