Stephen... what's the problem? Do you see something in your mind's eye that eludes you in physical form? A different shape, perhaps, or a different effect in the wood? A different finish effect?
A different shape is easy to come by - that takes only practice, with cheap woods, and if you don't like a shape you just made you can peel the wood off the tube & go it again.
A different choice of woods can make a lot of visual difference. Try one in tulipwood, or in macassar ebony, or in bloodwood or canarywood or cocobolo (unless you're already allergic to cocobolo). Bocote is a very interesting pen wood, too - one of my favorites. There are also worlds of burls to add visual interest, or pressed sunflower seeds, or money embedded in plastic, or corncobs or pine cones or you name it.
A different finish effect? Would you like to see the pen come out more matte, or more glossy, or more (or less) uniform? If so... try playing around with different finishing materials & techniques.
Or... just don't like pen turning. Your choice.
I won't buy "I'm no good at it", though. Not acceptable. You CAN like your work more, and you deserve to. Let's figure out what you don't like about it & engineer up a workaround, shall we?