Wrinkles are produced by computing directional stress, whether compression or stretching, for each pixel within each face of the mesh representing the skin, and then perturbing a surface normal based on the computed stress at each pixel in that face of the mesh. The waveguide laser structure comprises a first series of layers deposited in sequence upon a p-InP, p-GaAs or p-GaN substrate or other form of p-substrate, wherein these layers form the p-clad layer. If the determined average ink drop size does not match predetermined ink drop size criteria, the printer adjusts the activation signals for the ink jet nozzles to alter the ink drop size. The alert transmission module is configured to transmit an alert to a dealer in cases in which the financial terms comparison module determines that a customer is able to enter into a new financial arrangement on terms favorable to the customer. The perforations can be slits, with each slit having a length of no more than about 120 mils.