Recreate curves from existing image as a vector

I need somone who is better at doing curves and lines that I am. I need to accurately recreate some curved lines from an existing design as a vector that I can adjust and re-use in Affinity Designer. I have provided the source image and a sketch showing which elements of the design I want to recreate. I don't need the logo or other text shown in the image, just the curved lines. The 4 colours in use are :
21C1E4
0B7A91
414042
6D6E71