My first car sale! Please give me your opinion!

Hello, I am close to my first private car sale and would like to ask your opinion regarding the processing. 1. Advertising at mobile.de and autoscout24.de 2. Until the final sale the car remains registered to me to grant the test drive. 3. On test drives I am there. 4. Buyer is interested and we directly agree on a purchase contract (e.g. from ADAC). 5. An appointment is made regarding the transfer with the buyer. 6. transfer of 50-100 EUR (if the buyer jumps off after all, which then at least the expenses are covered) 7. On the next working day the car is logged off and the signs are removed from the car. Furthermore, the registration office and the insurance is informed about the sale. 8. Buyer comes with a short identification mark on the agreed date and there is a money transfer. Then I hand over the papers and wish a safe return journey. Have I forgotten anything else ? cu un_titled