@rebeccalawrence, with flowers.  8×10 tintype.  Copyright 2018, William Lawrence.

For all you trying wet-plate out there – just to show that sometimes things just don’t go right.  For some reason the darkslide was pressing against the plate and marred the collodion on what is otherwise a lovely photograph of Rebecca.  After two tries like this, I switched to my backup plate holder and the issue went away.  So hang in there – there’s a lot of troubleshooting, but wet-plate is worth it!