Is your extruder calibrated? It's hard to tell from this photo. Do you get a build up of plastic on each layer on which the print head catches? If it is catching, you will hear and see this happening during a print.
Have you check the obvious like belt tension and that the head moves freely in the x and y direction.
Less obvious is the setting of the current adjustment on the stepper drivers.
Is your chape meant to be a test cube? If so, you can improve your print by having a little gently cooling.
Using ABSPrusa Mendel Zaphod with Pronterface and slic3r 1.3.0. Printing well with 3mm PLA and ABS through 2 x J Head Mk IV b and Wade Geared Exruders. Controlled using RAMPS1.4 board running Marlin_v1.1.9