To save yourself the trouble of all that backtracking, you'll need to create a sprite, in this case it seems Sprite_Base will do fine. Then, with that sprite you need to attach a new Bitmap to it, which is the part you can actually draw on. Once this is done, you need to, within the scene itself, call
this.addChild(mySprite)where mySprite is the variable you used when you created the sprite. Now that we got all the technicalities out of the way, feel free to draw on the sprite like so:
mySprite.bitmap.drawText("text", x, y, maxWidth, lineHeight, "alignment")For the specifics of the drawText function, check the manual's documentation for Bitmap, it'll be there.