I have done this using Designer Persona. However, I can’t see how I could colour the space between the curves that are not enclosed without having to re-do the shape and enclose it.
In the second picture, I used the Pixel Persona to colour it. Is there a better (and more accurate) way of doing this with the Designer Persona?
What I have:
What I’d like to achieve:
I’m not an Affinity Design user, however this answer would work for any vector image editor. They all work using the same basic principles.
There’s no need to redraw anything. You could simply use the Pen Tool again to complete the paths to make fillable closed paths – shapes which overlap the circle.
Then remove the stroke, and set the fill to the same shade of brown.