This is THE most difficult thing to get right. For one thing, human noses vary a lot in size and shape, independent of the rest of the face. For another, designers actually fiddle about with noses very little; I have to have my hoods made to measure, because my jaw is too big and my nose too large at the base for most people's designs. Lastly, self-measured isn't always going to give you a good fit; you're not a cutting specialist or a designer and you don't know where on the head the particular measures for tyhat pattern nedd to be taken...Originally spoken by Fr3shL4tex
One suggestion: I have never fitted the Libidex hood pattern, because (to my eyes) the shape they make is remarkably asian - a low saddle to the nose between the eyes, and a low rise to the nostril area. I am more of a natural DeMaske hood head - high bridge to the nose, heavy jaw... maybe you should try a different brand?