Without knowing what strategy your using, other than chart patterns, it will be difficult to give advice. The markets are not easy to read at the moment for long term trades.
General advice would be to make sure you know where strong resistance and support are, have a look at this simple eur/usd 4hr chart, btw the 4hr chart is a very good indicator of overall trend if your trading on 15min charts.
Eur/usd has been in a range for quite sometime and this can be used to your advantage. I have indicated roughly your major resistance and support, now trying to keep probability on our side at all times, you would be generally looking to go long off support and short off of resistance. You might have to be patient, but that's part of being a longer term trader, let the market come to you.
At the point where you have identified these levels, move down the timescales and home in on your price action patterns.
Within this chart are many more lines of R & S that can be drawn to help in the decision process. Sorry if I'm teaching you how to suck eggs, but the fact that you said you seem to get in at the end of a move is maybe because your not aware of R&S points, and they are a very basic fundamental tool.
Also maybe try adding an oversold/bought indicator like stochastics or rsi to help with your entry.