Instagram : Adding Effects and Filters on photos and videos
Once you’ve taken or uploaded a photo or video, you can edit it by applying filters:
Tap Next, then tap the filter you’d like to apply.
Tap the filter again if you want to adjust filter strength left or right using the slider. Tap Done to save your change.
Tap Next to add a caption and location.
Tap Share.
Note: You can rearrange the order of your filters by pressing and holding a filter at the bottom of the screen, then dragging it to the desired position.