OK, can anyone help me with this.....I've been trying all evening to put a border around this design, so that I can put it on a colored t-shirt. I was thinking of a leaf green or bark brown color for the border. I just cannot get it to work in Paint, and I haven't been able to load the trial version of Photoshop to our computer (not that I would know how to use it

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What I would really like is a leaf or tree trunk pattern for the border around the design.......but I'm probably hoping for TOO MUCH