I used to do that. I love to trade over extension. Where the market on the daily chart is far far away from a moving average. But I need to let you know. The market can stay irrational more than you can stay sane. They don't end.
Picking tops and bottom is like dropping a knife and catching it with your bare hands. It usually ends bloody.
You have to know. In a market where big players come and play. They usually trade 10 lots and above. And they spread it across a few times. This is to ensure their desire price level doesn't get too far away from them. This is to ensure sensible market value.
Hence you have to know what is your prefer timeframe and how much you wish to get in terms of pips. 15 mins to 5 mins roughly gets about 10 to 20 pips before the market turns to do a pullback.
1hr to 4 hour about 50 to 100 pips. The yen pairs can give you that.
Daily to weekly about 500 pips to a 1000 pips. How I know? Thanks to 2 blown account.
Market goes in wave. In an uptrend. There is always a min downtrend. If the sellers are absorb. Another bull trend continues. And vice versa.
Support and resistance. When a support gets break. Is it a clean break or a protrusion. Just like a mole got out of its hole. It cannot jump out because the eagle could be waiting. It cannot stay in because it needs to find food. So to reckon a market has reach its peak. You need to wait for weakness where the market doesn't or cannot go up any more. A more obvious one would be a double top.
Or when the market breaks a support far away and curl up with spinning tops or dojis. Check for high wicks that touches the previous support level. More or less the market should turn.
It has been used since the dawn of Wall Street. A break of support/resistance followed by a pullback is a classic example of a trend change. This of course pertains to one timeframe. You have the 1hour and the 4 hour to deal with.
I can say more. Or you can like my fan page to view daily watchlist and small explanatory using only a Samsung Note 3 and clipart.