Pierced!

Update :
Magnet Support Clip Hidden V2 - Added a slot for the 3rd magnet so now this piece with magnets can be used in the vertical orientation too.

Parts to Print : All models have been printer at 200 microns, blade at 300 microns.

Blood Splatter X 1 

Magnetic Support Clip Hidden V2 X 1

GHOST :

Traumatized Ghost X 1 (brim required)

OR  

Frustrated Ghost X 1 (brim required)

OR  

Creepy Ghost X 1 (support & brim required)

Ghost Base Attachment X 1

KNIFE :

Blade Flat X 1

Blade Pointy (only if you want the blade to come out from the back) X 1 

Blade Handle X 1

Bone X 1

Alien (Ridley Scott) X 1 - this is a remix

Other things required :

Neodymium Magnets - 6 x 4mm (minimum 2)

Any magnetic flat rounded thing - example : washer , coin etc

Add magnets to the - Blood Splatter

Use glue to fix the magnets or you can use a small piece of tape for the magnets to have a tight fit which can be removable later on. The washer or coins need to be glued too.

Can go for a safety pin version too for the blood splatter to be clipped on the t-shirt if required!

Ghost Assembly :

Knife Assembly :

The pointy blade will be attached in a similar way!

The knife will be a bit heavier and so it won't be exactly perpendicular to the chest and might feel that it would fall off but if magnets are used for the clip too, it won't fall off. At least it didn't in my case.