Thanks for contacting us. Here are the steps:
1. Start by opening our editor
2. Click the red Upload Photo button up the top left and select your image
3. Add arrow stickers from the Stickers tab > Basic Shapes group (about 2 pages from the top). You can rotate the stickers and resize them.
4. Next add text from the Text tab. You can also resize and rotate the text.
Let us know if you have any other questions!