I realize most folks don't have time to immerse themselves in different genres, but now-a-days it doesn't take much time to just listen to how a couple of Traditional Fiddlers on YT phrase & emphasize a particular tune.  The nice thing about a video is you can catch bowing patterns. 

There are also GREAT sources of trad recordings! 

So, if you do sight-read 'fiddle tunes', don't stop at that!  Take a moment (afterwards) - listen to how close you come to the feeling a 'Traditional Fiddler' has on a recorded version of your tune, or tune type (Irish, Scottish, Canadian, or American - Reel, Jig, Waltz, Hornpipe, etc...?).  It ONLY TAKES A MOMENT to look up a tune & listen to a recording: Old Time Fiddle Tunes, Irish Tunesource, Ottawa Cape Breton Session Tunes, U of P.E.I, GFW Scottish Tunes!  I listen for bowing pattern/emphasis, rhythm, phrasing, and any distinctive ornamentation.  

...just be wary of A.I. generated audio - I have found it may, or may not be true to style because of the notation.  I believe traditional 'fiddle tunes' were never originally intended to be sight-read... there's too much taken for granted once immersed in a genre.  

IF YOU DO HAVE TIME - 'fiddle tunes' come from ALL OVER THE WORLD & can have a very rich history... where do they come from, what were they composed for, where did they travel to, how did they evolve, and how many versions are there?  Some American & Canadian Old-time tunes originally came from elsewhere & maybe composed under unusual circumstances, e.g., Speed the Plow comments - John Moorhead, composer. 

Check out the Genres Section (here on the Forum) to get started! 

...anyone can play whatever they want & however they want to, but there's really no reason to be unaware of basic genre traditions.  The SAME TUNE may be known very differently by culture, or geographical location.