My friend is pro designer in NX 9. I was trying to learn NX by watching videos in youtube and draw at the same time in NX. But I was using skecth and my friend told me that I sould not use sketch because If ı wanna work in a company ı wont be using skecth in NX , he said this is the professional way. I really wonder that whether it is true or only his idea. And if it is true , how can I learn to design without using skecth ?