A lot of artists on newgrounds seem to excel in this, I always find it impressive.
I try to do it sometimes and I can never really get it right. I made a habit of only drawing subtle lineart or skipping the step entirely as a way to save time and get straight to coloring, so I lack practice. Maybe I should go through a training arc to improve my lineart and make it look interesting, haha.
ShangXian
I honestly think your art is awesome, amazing and inspiring with its rich colours, use of good perspective, understanding of colour theory and lighting (Escape, Moss Ocean and The Sun being my most favourite works of yours). I love how your art feels with this style, it warms the heart and caresses the eye. But I understand if you want to experiment with stylish linearts, I think it will come out superbly considering how talented you are. Keep rocking!