Use easy-to-reach key binds for building: This will allow you to quickly and easily build structures, which is essential in 1v1s. The author recommends binding the Ramp and Wall to Q and E and the Floor and Cone to C and V. Set your mouse sensitivity to the middle of low and high: This will give you a good balance of speed and control.

While building, you can use R1 for the cone, R2 for the walls, L1 for the floor, and L2 for the ramp. These will be your primary sources of building materials. The cone belongs to R1, and the walls belong to R2. And the rest of the settings can be changed as you wish.