Whatever you are doing, be consistent.
I find that is one of the hardest things to do with my artistry. I lose sight of my personal voice in my work. My problem is that my voice isn't defined or loud enough yet.
At the heart of an artist's work, you should be able to see the artist. When it comes to your design, choose a style and go for it. People want to know that they are getting you when they hire you. Consistency is a good thing in art.
For me it has always been difficult defining a style because I don't want to be defined "by a style." On the other end of the spectrum, I can't be everything to everybody. All I can do in the meantime is keep creating. Keep writing. Keep shooting. At some point I'll find my voice. You will know it when you see it.