It saves blurry

[alysagoins]

I do my own drawing account on Instagram and I get business asking for my drawings. When I drawing on my iPad Pro it saves VERY blurry. I export it as a jpg as a 8.5 by 11 and when I look at my photos or send it through insta, it's blurry and it won't let me zoom in and it gets even blurrier. Help! I don't want to lose business 

[Sjaani]

Are you creating with Vector or Pixel brushes?
Vector should give you a smooth line while Pixel brushes will give you the squared edging you see when you zoom in to your image.
Have you tried exporting as either a png or pdf? Both of these options should create a cleaner result.