T-Shirt Design Image Editing

I have a PNG image for a t-shirt design that needs some minor editing. There are a few circles in the design that need to be changed to triangles. Specifically, I need 1-10 circles modified. The design is otherwise ready to go, so no other modifications are necessary.

Ideal skills for this job would include:
- Proficiency with image editing software
- Experience with t-shirt design modifications
- Attention to detail

Please reach out if you're able to assist with this task.