Refining the filter script for photos

Remote work for a web programmer. It is necessary to finalize the filter script for the photo for the thesis. The filters are written with php and using the image magick library. In total, you need 10 filters, at the moment only 2 are made, with other filters it turns out either not what you need, or everything happens for a very long time. We need to figure out what's wrong and fix it. I can't offer much for the payment. But if everything goes well, you will need help with 2-3 diploma projects and also php.