@haowood, I noticed that you wished to post a URL with images. You will be able to add URLs to your posts in a few days. There is a brief period where new members can't post links. We do this to deter spammers and keep the community safe.

Allow me to post the helpful illustration for you.
https://img1.wsimg.com/isteam/ip/6ce7848d-5d70-42fe-940b-5c13006b1d1b/Penile%20Injection%20technique.jfif/:/cr=t:0%25,l:0%25,w:100%25,h:100%25/rs=w:800,cg:true