Support is drawn in uptrend where you connect higher lows to see where the trend is heading.
Image you have is downtrend so you should draw a resistance line by connecting lower highs.
But what you have done is draw a channel with support and resistance line which gives you trend heading. As you can see it is pointing down.
First point you have marked is not clear low because few candles before you have lower low. But you can connect last two marked points and make a line to see where channel is heading.
On the image below you can see resistance line that connects several lower highs and second line that also connects several lower highs that was not included in first trend line.
Area between those two lines is area where resistance is so you can also make two lines on your chart if there is lower lows that are not possible to connect with only one line.
You should watch that you connect as much is possible highs or lows(depending what do you draw - support or resistance line) but not to cut the candle body.
If you cannot draw a clear trend line do not force it.