I like Peckish's suggestion of "the basics" being included at the beginning of the pattern. Seam allowances, etc.
I also tend to ignore those instructions when I see them - sometimes to my regret.
Once in a while, newbies/beginners ask questions that remind me that "it is not obvious how that should be done!"
I do like good/accurate descriptions. One time I was making a bag/purse - and I was not able to match the drawing. Well - when I looked at the picture/photograph - that did not match the drawing, either.