I need images that I have already created to be remade so they are large files of high quality

I am in need of an experienced graphic designer who can remake my existing graphic images into large files of high quality. For some of the images I do need small changes so I will have specific instructions for what tweaks I need done. I created the images in canva and when I enlarged them using irfanview, the prints aren't coming out clear. I need the images to be: Supported file types – JPG, PNG, and SVG Standard size for the design file – 100 MB (JPG, PNG) or 20 MB (SVG) Maximum resolution – 30000 x 30000 px I prefer PNG's at a 25000px Transparent background I need the images to be sharp and clear and translate to print well. These images will be printed on t-shirts, towels, blankets, etc. Some of the letters in these images all have a white border around them, I want that gone. It isn't printing well. I would like the color of the letters to be solid without the white border that shows up. Clearly I am not experienced in this at all and am looking for someone who has the skills to understand what I need and who also doesn't delay in completing the project. When this job is completed, it could turn into you creating images for me of the same style. I will likely be using your services on an ongoing basis. File Format: PNG - The images are currently in PNG format. Resolution/Size: Other (please specify) - I have a specific resolution or size in mind for the images, which I will provide. Usage: Both Web and Print - These images will be used for both web and print purposes. Ideal Skills and Experience: - Proficient in graphic design software and tools - Experience in image editing and resizing - Knowledge of different file formats and their advantages/disadvantages - Attention to detail and ability to produce high-quality results - Familiarity with web and print design standards and requirements -Good communication skills