This projects to be straight forward. Assuming by "custom theme" you mean it is okay to customize an existing theme to look the same/similar.
I am a great fit for this position, as I have decent web development experience, spent a lot of time as a QA, so your theme will be tested in depth, and have always had an artistic skill-set, such as graphic design and ux/ui.
I am trying to become established as a contractor. I will provide comps as well, but comps are not included in this bid(dont worry, i pride myself in being affordable).
Let me know if there is anything else i can do to become chosen for this.
Thanks for your time,
Aaron Loften