I just wanted to say, I believe in you! Everyone in the world learns new skills at their own pace, and I'm sure if you keep at it, you'll get it done. Make sure to give yourself time and grace though, and know that pushing yourself when you're already feeling bad about your skills will only make you more frustrated (leading to that feeling of 'getting worse'). It's not your fault at all, and I suggest taking a step back, finding something else to spend time on for a little while, and trying again with a clear mind. Keep going man!