Hello good people.

I thank you in advance for your input.  I've been studying surface modeling and watching videos (like this-https://www.youtube.com/watch?v=fA2-i34UVUo). But despite all the time spent learning about SL and surfacing specifically, there are still difficult snaffus.  One of them is the reason for this post

I've been working for awhile on this rain cover and sometimes the surfaces just flow nicely, other times every different type of surface that I try has errors

If you have any solutions, I'm all ears