A walk in the park

Summer may be over but there is still plenty to enjoy. The dawg was also really pleased to be out with his new walking buddy. This gave me a chance to play about with the new fisheye lens. The choice of composition and framing is a lot more challenging than my standard 18-300mm.
Any advice on using this type of lens would be welcome. It is 10.5mm but camera crop factor is 1.5, reducing effects somewhat (?)