Just want to know if anyone has created any tonal conlangs (either contour or register or level)... I've made one, but it's not my best.

I've not done completely, but in my conlang, tollir, there are some structures that are used only in fomal situations and others that are only for colloquial conversations.

However, someday I'll do different registers completely made.

I have one conlang that uses tonal registers, but its not particularly phonemic.

Not a lot of people seem to have tonal conlangs, from what I've seen.

I wouldn't expect too many. Most conlangers seem to have nontonal first languages.

I was considering a pitch accent in Experimental Conlang A, but the phonotactics seem to lean more toward an iambic stress timing that would suggest stress accent. (I think my complicated agglutinative morphology would suffer in the long term as a result.)