Now, this will give you a soft bend in your wire, if you're wanting a sharper angle, you can do one of two things.
First, you can over bend the wire and then return it to the desired position. This will sharpen the angle.
To get the angle even sharper, bend the wire completely, compress the wire with your pliers gently and then with a set of round nose pliers, carefully separate the wires to make enough room for your flat nose pliers. From there, bend the wire back, (carefully).
And now you have a nice, crisp angle that you can use for your project!