You’ll get there. 
One thing I noticed off the bat are the curves - specifically the control points. You should formulize the control points so the curves adapt to the pattern to create smooth curves. For ex: Generally you would want the control point of the endpoints to be at a right angle to the seam it intersects. Also the length is important.
I’m currently on my phone, so maybe @Grace could illustrate what I’m referring to, and I suggest you read the thread of Keith’s on smooth curves - it helped me a lot.
Could you be more specific? Ate you referring to the Fx button → dialog?