Organic modelling and sculpting can be a tricky method to get used to.
I myself am definitely no expert but there a few things that I learnt from tutorials, blogs and answers which helped me figure out how to go about it.
As Person132 says there is no "correct" way of doing it but using both views in conjuncture is probably the best practice. I'll provide a few images of a spider I sculpted a while ago (sorry for the gross images, it's my best example) but it shows how I would use the top down and bottom orthographic view to get a rough scale of the object and then use perspective view to sculpt the finer details, using reference images dotted around my scene.
You should always keep the camera moving as you sculpt to help you get the proper proportions all around, so if you're sculpting the nose in your example, start from the side view in orthographic view to get a reference of the size/length. Then switch to front view and adjust your width and then move into perspective and start tweaking it always referring back to a reference image, looking at if the apex is sharp on rounded, how high the bridge goes up in relation to the eyes, if the Ala is a big or small etc... (anatomy names from https://teachmeanatomy.info/head/organs/the-nose/external-nose/).
I can't model anything properly without a reference image in my scene, or just a bunch of reference images with different angles using Kuadro reference tool, otherwise it just looks un-proportional and weird.
Hope this helps someone one day.