You shouldn't feel small. I know how you feel, though. I've been a graphic designer/illustrator most of my life and am constantly intimidated by the quality and vision of other artists' work until I remember that no matter how "good" a person is there is always someone better and someone worse. In other words, you are always in the middle. Besides, those terms of "worse", "good", "better", etc. are all subjective and not everyone agrees with them on any particular piece. Technical prowess comes only through practice, practice, practice - it's something anyone can learn to do. "Vision" is what usually sets apart the "great" artists - they use the same tools and yet, they somehow come up with greater looking things. Vision is unique to each person, and that is what you need to tap when creating. Your experiences which have shaped your way of looking at the world are unique to you - developing that combined with practice, practice, practice and getting comfortable with your tools will allow "your" great art to come out. Just a small rant about art which you can take with a grain of salt, but I believe we are all artists looking to express ourselves in one way or another and the key is discovering our personal vision.