It was prety damn hard to even learn it Nuz maht zu'u lokal mindaht joriin Dovahzul it's moor

Any specific question I could possibly help answer?

Not really i know a fair bit of duvahzul (And my students mostly want to learn swear words)

Who is your class comprised of. If it's any group with the majority of people younger than 11, they're a lost cause. They will be disinterested and will never let the swear word thing go (the closest thing we have for a swear word in dovahzul is Oblivion). You'd have a better chance of teaching the laws of thermodynamics to a group of poodles, but if at least a couple seem interested, teach only them, and "fail" the others. When they start speaking dovahzul all the time, the others will want to learn. It's the bandwagon effect. Teach in small groups of 3-7 people, not big classes. It's easier and more effective.

Im still trying to learn how to speak dovahzul since I know most of the words? but still lacking on creating words for certain thing's