The ones I did you don't receive a certificate! Just to let you know.
I did night time diva, which was basically just evening make up (while face & eyes) it was good but more so for myself than learning techniques for clients as this was when I was starting out so I wouldn't recommend that.
Eye lining, cut crease & skin sculpting were really helpful for me.
I literally couldn't apply eyeliner on myself! Let alone on clients when I started so the eye lining designs course was great!
Cut crease isn't necessary to learn but it's something I wanted to be able to do.
Skin sculpting again -contouring was something I couldn't get right so this did me the world of good!
It's just a matter of helping you perfect certain aspects of make up.
The ones you receive a certificate for are the more pricier courses like the bridal, retail make up etc xx