FOr a good effect you should use a low noise mic
Just start with a script :
1 an intro of yourself
2 an imaginary program slot
3 demo content of the slot
4 sign off

for 988 you will go thru training before going in as a DJ
ou can get yourself more info from Radio MMU radio.mmu.edu.my , this student radio station had gave birth to a few 988 DJ (Zhang Tao is one of them)