Great job! You actually got very lucky with your first LD! Most first-timers are only a few seconds, much less 15 minutes! You also apparently had very good control, something that everybody wants! You are probably a natural at all of this!

You used a combination of MILD and WILD. You used a mantra and visualized your scenery, but you were also following the guidelines for WILD. This makes a good combination for you, apparently. You don't need any help with stabilization at the moment. You will definitely be a great LDer.