Market timing

I've been interested in investing for some years now. After studying technical analysis for two years, I'm now trying myself at what is called market timing. Using market timing makes you buy or sell securities based on chart analysis, prediction techniques that predicts the general mood in the market. I'm particularly interested in timing the S&P 500 index (I buy and sell iShares ETFs, ticker: IVV). Only about 10% of my real portfolio will be exposed to my signals decision, whenever there is a sell, I will keep the money in a cash account at 2.4%.

The portfolio starts with $10000 (for simplicity). I will send signals when the market is closed and my track record will be based on the value of the S&P 500 index when the market opens the next trading day.

My first signal, as of Monday september 26th: SELL.

Cash: $9980 (once $20 commission is removed).
S&P 500 exposure: 0$.

(Disclaimer: Don't invest based on my recommendations, I am a junior investor).