You will perhaps find that as you learn to draw gradually, you will mature your own drawing style in a natural way. Your individuality is unique, you watch things with a different eye to how others work and your hand muscles are dissimilar from others. So in a sense you might not be able to avoid developing your own style.
Honing you Own Drawing Techniques
If you feel that you don't have your own drawing style then try experimenting with a variety of styles, techniques and media until you find a style or a combination of styles that fits you.
Though, it is essential to be flexible as an artist so you should aim to have a plethora of multiple styles in your gamut. Do not get yourself limited to only one style as this may make it difficult to get commercial drawing work and you will perhaps get uninterested.
Developing versatility in drawing
Besides for developing an own drawing style, it is always nice to be flexible in your drawing to help boost up your motivation and to ensure that your job is worthy to be marketed should you desire to draw from a commercial point.
There are different methods to bring more versatility.
First is inspiration: You should acquaint yourself to as many diverse drawing methods as you can by glancing at art books and screening exhibitions amongst others. You could in addition try taking lessons from numerous teachers as each teacher has their own style of drawing and teaching which they will pass on to you.
You must make sure that you test yourself on a continuous basis by educating to draw diverse themes, using different media and different techniques. Possibly browse through websites and organizations that promote illustrator works to notice what clients want so that you can build up your expertise in the correct direction.