Magento Advanced Custom Work

We have built an eCard application that we need maintenance, support, and attention to with any current issues we continue to find from the web developer prior. We have built this application and our website on Magento and would prefer someone who can walk us through things we need, or do it for us on the back end, if needed. (CSS, or any adjustments needed) We also need to add SMS text to our current file upload, so our customers can receive our eCards by phone. Our developer wasn't able to complete all things we needed done and we would love to be able to have this completed soon!