I’m small change in this aspect but I just ask someone at the business who I should talk to and explain briefly what you’re doing. From there I talk to said person and explain in more detail what I’m doing and what I’m after. Maybe they have someone, maybe not. They usually like to see example work even if just in pictures. If they’re interested I tell them what I can bring to the table. While showing projects I mention what I charged showing a before and after. Making sure to often slip in every project varies and so does the price. Also, if it’s a shop that could bring multiple projects I like to go in while having an incentive for them based upon what they can bring to you. The more they bring the more I like to help them out. Not cut my own throat by any means, but maybe add a smaller mark up on material vs a one off job. If they do have someone, I ask if they are happy and this may be a bit snoopy but ask what they charge usually. This helps me to see if I’m in the right ball park at all for the area with what others are charging. I’m sure more experienced people with chime in with better advice. Also, I always leave a card or 2 just in case. Sometimes something goes wrong and they think about hey they stopped in I wonder if I have their card still.

Just walk in with a smile and business cards. Tell them your in the area and what you do. Usually you want to talk to the service manager but they will usually direct you to the right person to talk to. If they already have someone the work with make sure to ask "Can I leave a card with you in case they are ever too busy for a project you have." Also If you offer pick up and drop off service that is a big selling point.

Ty

Never talk poorly of your competition. I work for a few boat dealers in my area and even though they knew my competitor personally they still use me. He came in talking smack about me. Now everyone knows he spoke ill of me. I always give them priority treatment and that is important to them.

I agree with @Peter Pittel it’s not worth it. I have worked with competitors before. Knowing it’s something they are more familiar with than myself and recommend them and vis versa. Or needed an emergency supply. Talking bad just shows you’re true character and businesses realize this.