"........,where the values are as follows:"

(1) Is this sentence grammatically correct?

(2) What if we use "as following" or "as followed" or "as below" , instead of "as follows"? (Here,verify my punctuation too.)
"As follows" sounds quite right to me, as long as the explanation comes after the :
Students: Are you brave enough to let our tutors analyse your pronunciation?
Thanks, Pieanne. Any thought about the second point?
I'm not too sure...

"as followed" Is not OK, that I'm sure of. You'd better wait for a native to answer that part, sorry, Rishonly...
"As follow" and "as followed" are always incorrect, if intended as substitutes for "as follows".

"As below" is fine.

"As following" isn't used; though you can say "as in the following example(s)".

Students: We have free audio pronunciation exercises.