Keep going!
Not bad for someone's first effort! Just a few suggestions;
1) Put in an instructions screen (I know that it's obvious what we're meant to do, but it looks nicer to have one
2) A background could look interesting, and it makes it look like there's more effort in it
3) Since there isn't much detail in this game, you can afford to play around with the appearance of the text; try different ones, play with borders, or maybe draw your own.
But really, keep going with your flashes!