I had to practice making any wounds/injuries for my video.
The wounds/injuries that i had are as follows:

Slit wrists - I would use PVA glue, apply to skin and let it dry, then peel for fake skin.

Blood - I purchased some fake blood but added a little flour/food colouring to make it thicker and more realistic.

Fake Skin - Again just PVA glue, apply and dry.

Injection - Used a syringe and injected it into the fake skin/blood.

Black Eye - Mixture of dark make up (blusher/mascara etc.)

I researched how to make good fake skin and found numerous videos on YouTube, an example video is seen below.

http://www.youtube.com/watch?v=mIoQ8eRp_iM
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