The outfit and pieces are absolutely amazing. I can't fully describe in words how well done that is. My only critique is when you're doing cuts, burns, or scratches, try to do the more asymmetrically around your body or not so evenly spaced/less of them. They will look more realistic that way. But great addition nonetheless.
I've seen quite a few Chell cosplays, and more often than not the jumpsuit just doesn't look right. Either the fabric is of the wrong type (e.g. too thin), or the fit is not right, or the colour is off, etc. Your is just spot on!