Car Painting Stamp-Shape-Glitched, Please help

I painted Nissan GTR yestereday, it was nice then.

But, after i changed and painted the wheel hub the right side of the painting of the car is glitched,as you can see below.

【right side】the white line is glitched,the outline of it is shaped like a stamp.

*also uploaded below,but the pic is too small

  here is the big one

 http://ww4.sinaimg.cn/large/a15b4afegw1exx4cyt8nzj21hc0u0wlv.jpg

 http://ww4.sinaimg.cn/large/a15b4afegw1exx4d42bcwj21hc0u0thh.jpg

【left side】left side is ok, I just put them up to compare

http://ww4.sinaimg.cn/large/a15b4afegw1exx4d8nfizj21hc0u045d.jpg

http://ww4.sinaimg.cn/large/a15b4afegw1exx4ddag0rj21hc0u0dn8.jpg

I try add other painting on the right side,all is stamp-shape-glitched.

Kind Manager,please help.