Step 3:

Prototypes

Start by putting your ideas on a freehand paper (sketch);
Create a zoning (model with the location of each module);

Meeting on the points to improve or add

Then create a wireframe (we add the text.) ;

Meeting on the points to improve or add

Finally elaborate a graphic model (creation of the design, addition of the colors and the images).

Step 4:

Tests

Test and have your prototype tested by several different users, in all formats (smartphone, tablet, computer, other…).