Photoshop question - how can I add a drop of "Tear" on a picture with photoshop effect?

New to photoshop - trying to add a drop of "black tear" showing the use of non waterproof masacra.

Photoshop question - how can I add a drop of "Tear" on a picture with photoshop effect?spyware

make a new layer. use a brush tool, then pick blending option on the layer, edit the bevel and emboss... after that edit the opacity using whatever(u can use eraser tool)