Congratulations! Now you can change your LD count in your profile to 1! 
Yes, you absolutely had a lucid dream. I suggest that you check out this thread to see how you might increase and keep lucidity within the dream.
As far as not being able to immediately use super powers, that is normal as far as I can tell. You were likely caught up in just the excitement of lucid dreaming, but those types of skills will also likely require practice in order to master. Come up with your own things that work, and most importantly, believe it will work 100%.
Good luck in your lucid adventures!