Well, ever-since I first read one of Quentin Blake's books known as 'All Join In' back in the early 2010s, I found that his illustrations look really interesting and cartoonish. And that's why they became one of the bases to my illustrating.
And as for Dr. Seuss. I felt really interested in the shading he did whilst doing his own illustrating when I first read one of his books; 'How The Grinch Stole Christmas' back in 2009. And as you can see, the shading makes his illustrations look 3-D-able. And that's why they became another of the bases to my illustrating.
But E. H. Shepard is Dr. Seuss and Quentin Blake put together! He did Blake's colouring-in and Seuss's scribble-shading. Ever-since I found an edition of 'The Wind In The Willows' back at the old Grange School back in 2010, I felt interested in the old illustrations. And that's why they became the last of the bases to my illustrating.
So you must know now, they each have their own styles:
Quentin Blake - Quentin Blake Style
Dr. Seuss - Dr. Seuss Style
E. H. Shepard - E. H. Shepard Style
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And these styles are both the basis and inspiration to my style: Justin P. Lees Style.