Before you start tying the carrier and the bicycle, make sure your motorbike tank is FULL.
.jpg)
It's only RM4 for this 6 bungee cords
.jpg)
Put the 2 wooden sticks across and tie it with 3 bungee cords (indicated by 2 reds and 1 blue bungee cords) to the GIVI motorbike rack

Position the bike slanting across the carrier
.jpg)
Make sure your crank are parallel and tie the chain with string.
.jpg)
Tie the seat tube to the carrier
.jpg)
Tie the handlebar, top tube and downtube with the bungee cord to the GIVI motorbike rack
.jpg)
Tie the wheelset with the bungee cord to the GIVI motorbike rack
.jpg)
Completed view from rear

Completed view from side
Shake the motorbike to ensure that the bike is firmly secured (QC)! To ensure that you will not scratch you bicycle, you need to cover some of the parts that are in contact with the GIVI motorbike rack and DIY carrier.
I know that some people has done something better than my version. But it's okay. At the moment, it's solved my problem. I will try to improve it in the future.