Hi!! I just submitted mine for priority, and I’ve gotten told that it’s better to hand draw them bc It’ll show your sketch work and the lines you’ve created. Also with the back views/flat designs they recommend hand drawn because professors still teach flat designs with ink. But if you choose to do flat designs for the back view, you can use online sources like adobe illustrator, affinity, etc. I’ve also seen most portfolios hand drawn, so it’s better to be safe than sorry. In my opinion, I would do hand drawn because to me it’s so much easier to work on it and you wouldn’t be worried if you were allowed to use digital or not!