You could improve a lot if you put your heart into it! I came back from an injury around half a year ago. Every since I came back from my 2 year rest from tennis (with some playing once in a while though not recommended by the doctor :P), I found myself playing like a noob: my footwork was sloppy and i had forgotten a lot of the technical stuff I was taught early on.
Through posting videos here, getting advice and working on my game a lot, I have improved a ton.
One thing that helped me a lot was improving my footwork. If I could do it, so can you. Good luck
PS:Posting your video on this forum and picking out the good advice really helps.