How to apply transitions to layers

[jeffl79006610]

Newbie here. I bought a transition set (looks like ink blots) but it did not come with instructions so I'm not sure how to apply a transition to two layers. The two layers are static images. Can't seem to find an online tutorial. Any help would be appreciated.

[Ann Bens]

Post link to where you bought the set.

Cannot help if we do not know what they made off or how the look.

Screenshots will help from your side too.