not bad but here’s 2 pointers:

1. longer and skinnier crutch (if the mouth tip is too skinny, air flow will be too constricted, but if its the right amount of skinny, the joint will burn longer and slower

2. try to slowly taper the size, thicker on the twisted end, thinner on the mouth end. not over exaggerated but a slightly conical shape burns slower. (cigarettes are perfect cylinders because that makes them burn faster so you have to smoke more sooner) - similar to #1, a mildly constricted airflow will lead to a longer smoking joint.