I do have some questions for you:
* can I complete the process at any step by clicking the "Finish" Call to Action?
* where will I be redirected by pressing the "Cancel" CTA?
And I have some suggestions after checking your wireframe:
* I'd like to have the screen/page title instead of "Back" and "Next", it will help me to remember where I'm coming from in my user journey
* I'd like to have a strong visual identity for the CTAs and the navigation items (in this case "Back" and "Next")
* I'd like to have a strong visual identity for the primary/positive CTAs and the secondary/negative CTAs (in this case "Cancel")
I hope it will help