The texturing looks good! You might want to knock down that hard edge with a putty knife or, maybe better, a finger or rag before it fully drys to help blend the edge in with the existing surface. It doesn't have to be perfect but you really don't want any "sharp" edges like seen in the second photo.
While sanding is an option for after the compound dries, working with it "half dry" is also an option and works well for situations where you have to "knock down" a rough edge or similar. You can scrape at the rough edge or rub it smooth without disturbing the rest of the patch or the existing ceiling textures.
Applying the primer and paint will also help match the texture as it will tend to slightly fill ridges and creases, etc. just enough to make the transition from patch to existing texture blend better.