I'd recommend looking for someone who advertises as a girlfriend experience (gfe) and book a minimum of 90 minutes. Look for someone with a decent website who mentions taking her time, building a connection, ect. I don't know what website you're using to look for your ladies but the higher end websites will generally attract ladies who are experienced and want you to have a good time. If you like wine I suggest bringing a bottle for the two of you to share, you don't have to finish it but even sharing a glass can help build a relationship prior to anything sexual.