Just discover this fabulous method and have to tried it! Thank you SusieM to share it with us!

17.04. CO
gauge 20st/24r =10cm
9 border st (cable), 1 front st, 1 Seam st (SST), 22 back st, 1 SST, 1 front st, 9 border st.

Increase are made with M1 left and M1 Right on each side of the SST, as I don’t like so much the kf&b increase.

Increase until 70 back st.
Front increase every 4 rows.

Then increase cap sleeve.
Increase until 53 st for sleeve. Transfer the sleeve st. and join front and back.
continue strait for 35 cm.
work the braided border as for lace border finishing.
Sleeve decrease 1st every 10 rounds. 43 st remain. work the braided border.
Finish with an I-cord to attach front.