A personal video analysis is one of the most effective ways to improve your technique. You will receive concrete feedback on your current issues, what to change and how to change it.
aramtraining offers professional video analysis as recorded videos with voice-over, or as (recorded) live video analysis sessions. You will receive a recording in both cases. During a live session, however, you can ask additional questions.
For either case, there are single sessions as well as subscriptions available. Subscriptions make each session significantly cheaper, sessions that have been used-up in the respective time period, cannot be claimed later, though.