Prepare baking sheet with parchment paper.
Heat white chocolate chips in the microwave at 15 second increments, mixing between each, until melted.
Add oil, and mix in completely.
Working quickly, spoon about 1/2 tsp of white chocolate mix on the prepared baking sheet. Then using the back of a spoon or offset spatula spread the chocolate to create ghost like shape.
Repeat with the rest of the white chocolate mixture
Melt the milk chocolate and transfer to a piping bag or ziploc bag. Cut a hole at the end to create a small opening.
Pipe chocolate to make eyes on the white chocolate ghosts.
Allow the chocolate ghosts to cool and harden completely at room temperature or in the fridge (about 20-30 minutes)