I'm no game dev but an artist all the same. For you, it is important to get something out into the public. Creating a bunch of small games gives you a chance to focus on a small collection of techniques and practices that you can later use in a bigger context.
Using Pong as an example:
1 Create your version of Pong for 1 player (or two) = learn simple physics
2 Create a bombing game in the spirit of Angry Birds and alternatives = take physics further in an advanced 2D environment with a bit more happening
3 Combine the two into a game where two players are bombing each other. One shoots to destroy the other and the other executes a defending maneuver.
That is how it goes It is like a puzzle. Learn a thing here and a thing here and combine. Then repeat. For you right now it is just important to get something out. It will be a BIG boost for you. There are people around you who can help you with sounds and graphics both for free and for money if you are concerned of your skills in those areas.
Good luck out there!