Hi Frank , I have protractor maked out on my cutting matt and use that . 45 degree and 90 degree . Thanks Fredrik for the kind comment

Okay after spend most of the day in front of the bench . Lower rib tapes on done and the national markings in place .
The decals are frustrating to work with . They will not side of the backing . I have to lift a corner and remove the backing like a sticker . A few broke , but no biggy , keeping the surface wet really aids in these decals . Once pressed down any movement and the will tare . Again everything got a sealant coat of future .