When it comes to 3D printing, Calibration is key. esteps, Extrusion Multiplier, Filament Diameter, Layer height. lots of variables need to be set in order for everything to work as expected. Once you get your settings to a spot you are comfortable with you will end up doing some (possibly many) test prints.. cubes, triangles. and now the Jolly Roger. aka #3dBenchy
The Jolly Roger 3D printing torture test is a great model to evaluate how your printer is performing and compare it to your friends and the world.
The stl file is available on thingiverse