Falcarius would have had a beak, and it would have had rather simple feathers akin to a mix between chick down and emu/cassowary feathers. Other than that, the shading's pretty good, and I like the colors that you used. I'd rate it 4.6/5.
Usually, dinos with beaks show where the beak is, but Falcarius doesn't. Beside, its' one of the earliest known therizinosaurs, so it could've evolved beaks later like how dinos went for tooth snouts to bird beaks.
But Falcarius is the first North American therizinosaur, showing the earliest ancestor of therizinosaurs moved to America after they evolve in Asia and evolved by themselves.