Congratulations on your first SR shave. As Tomo said staying out of ER is priority one at this point and I would suggest priority two is keeping blood on the inside of your skin.
As everyone has said, using a straight will be as good if not better than a cart, and practice is the key. There is a learning curve with SR shaving that probably puts a lot of people off as patience is required and your first dozen or so shaves won't be as good.
When starting you will probably notice that improvement in your technique occurs quite fast then seems to plateau for a while. This is normal and you are consolidating what works for you. I found this happened at least three times, but then another bout of improvement happened only to plateau again.
Keep at it.
As everyone has said, using a straight will be as good if not better than a cart, and practice is the key. There is a learning curve with SR shaving that probably puts a lot of people off as patience is required and your first dozen or so shaves won't be as good.
When starting you will probably notice that improvement in your technique occurs quite fast then seems to plateau for a while. This is normal and you are consolidating what works for you. I found this happened at least three times, but then another bout of improvement happened only to plateau again.
Keep at it.