I think you are wise to let it grow and see where it goes on its own. Percentage wise I don't know how much you removed but I can tell you that too much of an overall reduction can cause problems. Keep your eyes open and set the tree before you as often as possible and just look at it. Look for good points like a movement in the trunk, the emergence of a branchs, and anything that looks bonsaiish. When you find these traits don't jump to conclusions, just contemplate those things and see what the tree may be telling you. Look at the over-all general rules of design in bonsai and try to understand where you have violated those rules. Sometimes these violations can be usefull but most of the time they are distracting. One point here that I see is the fact that your current design has a lot of parallelisms going on. Too much of your design though it may not be bar branches, visually has the effect of creating design elements where the horizontal movements are accros from each other, the major distraction of bar branches.
Technically you need to work on your wiring skills. Believe me, these things do not correct themselves you have to go after a solution. There are quite a few things on the Net by Ryan Neil and there is a free tutorial available on Craftsy that is quit good. Watch someone who knows what they are doing and observe what they do and how they do it. Remember; especially when using copper wire it takes two hands to do it correctly. The wire must be anchored correctly and then it must be supported by one hand against the trunk while it is twisted around the branch with the other. When each loop accros the branch is made it must be supported by the other hand all the way up the branch. The supporting hand follows the looping hand. The wire must be placed around the branch without any negetive space, loops of wire with the light shining through the gaps between the wire and the branch. I know there is one "Master" who teaches that the wire should be loosely wrapped around the branch so it wont bite into the bark, but it is impossible to find examples of masterpiece bonsai by this master. One is left to ask why?!
You need also to understand what to remove and what might happen when you do. This tree is a lot like looking at my own early efforts; that's why I am spending the time with you on it. A master I am not but I have also found that many who are masters came by those skills naturally; everything I know I have had to learn the hard way, so I am not one who will sit back and say; "You figure it out!" If I can help I will do so.