First off, what is it? Most blues don't require "pressing" but do require smoothing. They also usually don't require sealing. I can help you a lot more with that information. As for healing, as the rind forms it will seal up most of the gaps. Rinds tend to grow over small openings, including piercings, as they develop. Here's a shot of a blue I did both before and after rind development without smoothing, I waited too long.