I'm really getting into preparation as of late, courtesy of having some of the right tools on hand. But as I am still a novice at it, I have been practicing on easier specimens. I thought I'd share my progress - and a wee bit of pride.
When it comes to easier prep jobs, Penn Dixie Eldredgeops rana can be fairly forgiving for the beginner.
The first picture is of how the roller (on the right) appeared once I freed it from the matrix. It's a might bit dusty and caked in matrix.