The material used are heavy stock paper to print the invitation, double sided, and pink colored tissue paper for the envelope. I'm not very good in writing a process, so I hope you'll get the equation helpful.
This is what I made with the tissue paper leftover. Full tutorial here. The party itself will be held on Sunday, so I'll be back with more photos. Busy, busy, busy.
PS. My brother has just welcomed the newest member of the family, exactly 1 year apart from Baby G. I am so full of joy!