Here are the steps to create a flyer in Photoshop:

1. Open Photoshop and create a new document with the desired flyer size, e.g., 9x12 inches.
2. Create a new layer and draw with the Pen Tool (P) to create shapes and decorations for your flyer.
3. Draw a circle and create a clipping mask to insert an image inside the circle.
4. Add text with the Text Tool (T) and adjust the font, size, color, and alignment.
5. Save your flyer as a PSD file or export it as a JPEG or PDF file.