as i think if i was a introvert founder firstly i was prepared myself in the field of sales is makes sure my self about the product which i was going to sell to anyone is one of the good products if a costumer ask me question like why this product is good what is the best part which make it different from other i was here to buy that product but cause of something it is not available here i found your product it shows the same things which is written on the product that for i am here does it really helps me same so at that time . for selling my product and gives a best varified of my product which may helps to make sure the costumer to buy my product only for that i have to be sure first about the product . if i can explain the costumer and the costumer satisfied so that my brand goes higher in selling and then here is your answer to sell your product . you also need to add your product in market