you have at least 3 possibilities:
-Write a text as said above
-Write text in the drawing itself with Draft Wb
-Write text in a spreadsheet

the profile must "wrap" around the path so that it does not have an auto intersection, and "transform" on "Right corners" (or round)

the masons of the XIV em did not ask themselves the question if Fc should join the right, the ends or the left

I don't see the point in making a plan of the blank, folding it then unfolding it Don't say that you are a beginner, when you read your sketch, you can see it (this is not a criticism) uses equalities, symmetry, alignment and finally everything that is geometric before the dimension and no =0mm unfo...

attach the file, it seems that there is stuff before and stuff after

no, it's better not, as you see it doesn't distribute the thicknesses correctly
do the T then the V, you can also easily manage the Middle, Right or left

Edit show my exemle

Trim breaks constraints in a sketch that was constrained, it's understandable: lengths, circles, symmetries are cut in two, it's frustrating, but there are no solutions

if you do the sketches with sketcher (outside the Body),
there is no point doing Binders , ShapesBinder , Sub...., SubSub....
you drag the sketch with the tip of your mouse into the Body
to make the groove: if the radius is too small to risk self-intersection, you have to redo a path

voilà

tu veux dire que ma photo JPG te parais horrible , mais elle parai belle sur cet vue non c'est une capture d'écran
ou c'est dans mon fichier , il est fais dans une ancienne version

Edit : comme ça c'est mieux