Have 4c hair no curl pattern? How can get one?
As far as a natural curl pattern goes, there really isn't a permanent way. Your best bet is going to be by doing a twist out, braid out, or a flexi rod set. They should give you the curls you desire. However a permanent change in your hair's natural curl pattern(or lack there of), to my personal knowledge, is not fully possible.
I have 4c hair myself... frankly 4c hair doesn't really "define" like other curly textures do. but hey the twist outs be looking bomb tho lol