I like to be cognizant of my influences when possible - partly so I can cite my sources, so to speak (giving credit where credit is due and all that), but also so I can look back to that source for more inspiration if need be.
So keeping that in mind, you might be able to understand my frustration when I realized I couldn't for the life of me remember where I first saw the "twin divots on a mechanical shoulder" that I incorporated into sorXa's design. I knew it wasn't something I came up with myself - it's an aesthetic choice I've had floating around in the "design elements other people came up with that really I like" part of my head for years now, and I was confident that I definitely saw it in someone else's art first. But where? At first I thought maybe it was inspired by Solid Snake:
... but I had a nagging feeling that that couldn't possibly be right, because his arm isn't mechanical (I knew I first saw it on a robot or cyborg, not a human in a skin-tight suit), and the number of divots doesn't match (three vs. the definite two that I've had lodged in my brain all these years).
Then finally, just now I pulled out my copy of the Mega Man Zero Complete works to look for references for a drawing I'm working on, and lo and behold, on page 18:
Oh look, Zero had two shoulder divots in the intro to MMZ1!
I have no idea how I forgot, since this illustration was one of the first things I saw when playing the series back in middle school, and the overall visual is seared into my memory (though looking at it now, I clearly forgot a lot of little details). This design element is also present in the RTRZ1 CD cover, which is showing essentially the same scene (though it seems to be Zero awakening, rather than in stasis):
... which I don't think I saw until a fair bit later, but regardless, Zero was definitely the inspiration for sorXa's shoulders, which checks out with all the ancillary details of my memories about those shoulder divots, and makes sense given how much of the rest of her design borrows from the Zero and ZX series.