what should I offer?

[Clintwheel]

Besides a basic detail, polish, wax, etc. What other services should I offer?
Are the basics enough to get me started, or should I also offer extras like tar removal, engine clean, etc.

Also, can I maintain a buisness with walk ins and referrals or will I need to find car dealers to keep my head above water?

[sharpie]

Welcome to detail city, I cant answer this question but if anyone can you came to the right place!