Providing some pictures of your dentition would facilitate planning the treatment online. A clinical examination done by a dentist would be even more explanatory.
Irrespective, assuming you match the dimensional criteria required to go ahead with a smile designing procedure- like having enough slant of teeth, or enough space etc, you can choose to have veneers or crowns(no. of teeth to be involved would depend on what your dentist suggests)
When we are talking about smile designing, it could range anywhere from 15k-40k( a very approximate quotation)- this would depend on how many teeth and the quality of the porcelain veneers/crowns
Next Steps
Visit a dentist in person, or have an online consultation