Rene,
Your juniper seems to be growing nicely, but it has a major flaw that you should address - if you care to. The long, straight section is simply artificial looking. As this is a juniper, you should raffia and wire the trunk so that you can put some interesting and natural movement into it. As it is, the tree looks like you just capitualted at what the tree gave you (not much). But bonsai is a partnership. You have to impose what is necessary (to the point that you can) upon the tree to improve it.
Bonsai is the art of artistic improvement, not just styling what the tree gives you.
Take it or leave it. ;-)
Kind regards,
Andy Rutledge
www.bonsai365.com/
zone 8, Texas