The body's nice. The spikes seem a little flat, though. Take a look at kentrosaurus for ideas: https://palaeo.gly.bris.ac.uk/dinobas...ntrosaurus.gif

The wings need a lot of research, though. You have to remember that wings are specialized arms. They have shoulders, elbows, wrists and fingers. The long bones that support the wings are actually fingers, which means they all radiate from the end of the arm. Also, the membrane of the wing surface connects a long way back on the body, in bats, flying dinosaurs, and even birds. https://members.aol.com/caveconser/batw.gif