banner designs

I need several banners designed for a site that offers spell-casting services, done by witches. All designs must be mystical and mysterious, without being overdone and tacky. Must look professional. Aside from a logo and banner text, I have no design ideas for these banners - I will look to you for the creativity. Although I have a very small budget for this project launch, I will need more work done soon on this. Banners should be non-animated, and in .jpg format, with usable file sizes. Here is a list of the needed banners and sizes: 6x 140x140 2x 250x250 1x 200x200 1x 300x100 2x 300x250 2x 468x60 1x 234x60 3x 728x90 2x 160x600 2x 120x600 2x 88x31 1x 120x90 1x 120x60