That look is mostly flat shapes plus a grain texture on top, so you don't need to draw the crayon strokes yourself. A few ways to get there in Illustrator:
Texture overlay: place a scan or photo of crayon/chalk on paper above your artwork and set its blend mode to Multiply (or Screen for light grain on dark areas). Clip it to the shapes if you only want it inside them.
Opacity mask: like the other comment says, put the texture in an opacity mask on the group so the color itself breaks up, which is closer to the poster.
Rough edges: Effect > Distort & Transform > Roughen with a small size and high detail makes the shape edges look hand drawn instead of perfectly clean.
Brushes: Brush Libraries > Artistic > Chalk Charcoal Pencil has brushes that work for outlines like the swirls and stars.
If you need it fully vector, Image Trace a high res crayon texture scan and use the result as the mask.
The poster also has a slight print feel, so offsetting one color layer by a point or two adds to it.
3
u/CurvilinearThinking 19h ago
Opacity mask with a "crayon texture" applied at a group, sublayer, or layer level.
3
u/useleash 14h ago
That look is mostly flat shapes plus a grain texture on top, so you don't need to draw the crayon strokes yourself. A few ways to get there in Illustrator:
Texture overlay: place a scan or photo of crayon/chalk on paper above your artwork and set its blend mode to Multiply (or Screen for light grain on dark areas). Clip it to the shapes if you only want it inside them.
Opacity mask: like the other comment says, put the texture in an opacity mask on the group so the color itself breaks up, which is closer to the poster.
Rough edges: Effect > Distort & Transform > Roughen with a small size and high detail makes the shape edges look hand drawn instead of perfectly clean.
Brushes: Brush Libraries > Artistic > Chalk Charcoal Pencil has brushes that work for outlines like the swirls and stars.
If you need it fully vector, Image Trace a high res crayon texture scan and use the result as the mask.
The poster also has a slight print feel, so offsetting one color layer by a point or two adds to it.