I want to design dart board image like that

[Thomas J Riley]

I need to make photo like this in mobile.

I want to design How high to hang a dartboard image like that in my mobie? I tried but failed,Please help me to make without Pc. -_-

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[Test Screen Name]

It just seems to be a photo of a dartboard, with two lines, and some text added. Which part of this are you stuck on?