A layman's trading journey from £1000 to £10,000 in 9 months

Simplicity was the core of my trading strategy.
Average pip size: $0.30
Instrument: Dow Jones (US30).
Drew Support/Resistance lines on Day/4H chart.
Time frame: 4 Hours.
Three indicators; MACD (The Moving Average Convergence/Divergence) 12.26.9,
RSI (Relative Strength Index) 14.2 and
SO (Stochastic Oscillator) 14.6.6.
Entry/Exit: Signal line crossover on RSI+SO in over-bought/over-sold zone, MACD crossover.
Confirmation: Price touching support/ressitance values and Heikin-Ashi.
No Stop Loss. The maximum drawdown was £1700 in the middle of May and had to top-up the account due to a margin call but withdrew the amount deposited soon as trades matured.
Please feel free to poke holes in this, after all, constructive criticism is the only way to truly improve.