This can be fun and simple, as you don't even need to have started a My Team mode or Driver Career.
From the Home screen, toggle with
to "Customisation", and then select "Car Liveries". Create New, or select one you have already started and press
to edit.
I suggest you use this to complete the "Represent" achievement, for filling all sponser slots on a car livery:
--> "Sponser Decals"
--> "Sponser Slot"
--> Select a Sponser for each of the 5 slots
You can also change the colors of the car livery with
.
Save and Return with
and move onto "Character". Here, you can change and edit the style and colors of your suit, helmet, and gloves, as well as changing your stance and celebration.
Save and Return with
and move onto the last 'objective', "Badge". You can change the background (i personally love the transparent/first option), and the design by using
and
respectively, as well as the colors with
and style of the emblem with
.
Save and Return with
and your achievement should unlock
Of course, you can unlock this with natural progress while setting up your My Team mode and unlocking "New Kids on the Block".