Please feel free to call yourself a leftie. Anyone who picks his/her nose with the left hand is, by definition, a leftie — no, wait, I use my right hand. ???? what’s with that? But my poor grandmother had a hard time teaching me, her only granddaughter, to sew and knit.
My MIL is going through the same thing with her ONE Granddaughter (out of 14 kids, total) who is a Lefty. But, they’re both very determined “crafters” so I think all will end well. :)
My right-handed mother threw up her hands and refused to teach me to sew or knit because it was all “backwards” to her. So I had to go underground and find my own teachers (LOL!), who all shook their heads at my nonconformist way of doing things, even though they taught me the traditional way. (Nobody has figured out how I do what I do when I knit, for example, and I cannot explain it.)