Wheres my corpus spongiosum

Ever since I could remember my penis my spngiosum was really never visible.is there a way I can make that bigger too?

My CS has reacted well to clamping, but only consider it if you’re a seasoned PEer..:)

I actually started clamping a couple of days ago. I’ve been doing pe for a little over a year but it was off and on, now I’m doing reliegiously as some will say it