Make realistic blood in Photoshop.

Final image

Open new file

Step 1

Use Pen Tool to draw shape for blood.

Step 2

When finish drawing, click right buton of your mouse and select Make Selection.

Step 3

Open new layer.

Step 4

Select color.

Step 5

Color your shape with Paint Bucket Tool.

Step 6

This is shape and color what you get.

Step 7

Go to Property box>Layers>Layer Style>Bevel and Emboss. Use This layer style like in picture. If you have open smaller or bigger format, you can change this options.

Step 8

Go to Property box>Layers>Layer Style>Gradient Overlay. Use This layer style like in picture.

Step 9

Finish