It's the bomb!
This tutorial will teach you the essential techniques required for creating custom icons with Sketch. And in the process you will create a cool, cartoon-style bomb icon.
Launch Sketch and begin by drawing a green rectangle to use as a background layer. Then right click on the layer in the sidebar and select Lock Layer to avoid accidentally selecting it again.
Rectangle:
Next draw a purple circle near the center of the background layer, using the Oval tool and holding down the shift key to constrain proportions.
Circle:
Place a small rounded rectangle near the top of the circle, aligned to the center of the circle horizontally.
Rectangle:
Select the Rotate tool and move the anchor point for the small rectangle to the center of the circle, then rotate the rectangle 45° clockwise.
Rectangle:
Select the circle and rectangle layers and combine them with the Union boolean function
Now add some styles to the merged bomb shape:
Bomb:
Use the Pen tool to draw a short wavy line from the center of rotated rectangle, to approximately half down the circle. Use 3 points in total including the start and end points then remove the fill and add a border:
Fuse:
Go to the Layer > Paths menu and select Vectorize Stroke to convert the border to a fill so that we can add additional styles to the fuse:
Fuse:
Add a new pattern fill layer above the solid color fill and select the diagonal lines default pattern (or use your own if you have a better one).
Fuse:
Use the Star tool to draw a new shape slightly overlapping the fuse and bomb shapes.
Star:
Add 3 borders to the star layer to create a spark effect. Reorganize if necessary to get them in the following order from top to bottom:
Star:
The bomb is currently looking a little bit flat, so let's add some extra lighting. Draw a new circle layer with no fill and a white border, in the center of the round part of the bomb.
Circle:
Double click the circle layer to enter the path edit mode, and then click the Open Path button to open up the circle.
Delete two of the vector points so that only the top left quarter of the circle remains.
Circle:
Select the Border options and add a dashed stroke, and lower the opacity of the layer to 20%
Draw a small white star near the top of the bomb shape.
Star:
Double click the star shape to enter the path edit mode, select all of the points on the star and set the corner radius to '3' to soften the shape.
Star:
Rotate the star 30° clockwise around the default anchor point.
Star:
Duplicate the star, then move it to left, reduce the size slightly and rotate -45° anti-clockwise.
Star:
To create a shadow, draw a new Oval shape layer below all other layers except for the background:
Shadow:
The bomb actually looks pretty cool at this stage. But to finish it off, let's draw a friendly skull and crossbones sign onto the bomb to signify danger. Start with a simple circle for the skull head:
Circle:
Use a small rounded rectangle for the jaw section of the skull:
Rectangle:
Next up, lets give our skull some eyes. Draw two circles (or just one and duplicate it for the second). The only difference will be the X position values.
Eye 1:
For the nose, use the triangle shape tool to draw the basic shape. Then double click the triangle to enter the path edit mode, select all 3 vector points and set the Corners value to 2.
Nose:
Next up are the crossbones. Start by drawing a basic rectangle:
Rectangle:
Draw a small circle intersecting with the top left point of the rectangle:
Circle:
Duplicate the circle layer 3 times, one for each of the rectangles other corners. Then select all 4 circles and the rectangle and combine them with the Union function.
Circle 1:
Take the combined bone shape and rotate it 15° clockwise.
Bone:
Duplicate the bone shape and flip it horizontally.
We could happily call this finished now, but I do have one last optional final touch..
Texture 1:
This tutorial has covered a lot of techniques essential for designing custom icons, such as combining simple shapes to create more complex layers and also using layer styles to create visual effects. These techniques are also universally applicable, not just within Sketch.