Create 10 Website Banner Graphics

We are looking for a professional graphic designer to create ten (10) premium quality banner graphics for our e-commerce store. We are an online retailer of Office Supplies. Most of the banners will be banners for various category landing pages. Examples could also include banners that link to our "Coffee Center", "Custom Stamps", or "Tax Preparation Forms". Other banners will include information regarding marketing promotions, requests to review/ask a question/submit a comment, etc. Most banners will be 250px x 200px. Larger banners will be 696px x 450px. Dimensions still to be finalized. I have attached several sample graphics that we like to use for samples of the quality or style that feels fitting. Modern design styles and bright/bold colors are preferred. Please provide sample graphic design work you've done in the past. Thanks!