Hi Marly,
Nice skateboarding! You may find it easier to put your right foot on the front of the board to start from still ... rather than your left. I am goofy foot like you but only start on my left foot occasionally - the same goes for propelling yourself along - right foot on the board is easier for goofies! You are awesome - keep wearing those pads and gloves - concrete is way less forgiving than water!

Btw: it is of course great practice to skate either way and even natural style - you will need that in a half pipe!

Upped and resteemed :D