hrm...well I've never made a tutorial before so best of luck following this ha! My style of shading and shape definition is very akin to Illustrator. I just prefer to have more control over my gradients than in Illustrator. Using masks retains crisp edges on all of your shapes, retaining their 'vector-like' quality at 100% zoom but no further. I told you guys this was rather boring xD
If you need help though, feel free to note me or post a comment here!