Being made in His image doesn't mean a physical image.
God is love, loving, good, kind, gentle, creative, organised and a thousand and one other things. If we are kind, generous, loving etc etc, that is because our loving Creator made us so.
No way.
You have a beautiful testimony; it would seem you have every reason to give up on God, yet here you are, "watching and praying always". It takes enormous faith, and strength of character, to persevere, keep trusting, hoping and praying. There are non Christians who pray for healing, or have some other request, don't receive it and give up, saying that God isn't real or doesn't answer prayer. You haven't.
Some Christians take the view that long term sick, disabled, Christians are a bad witness to God - they said it to me, on here, when I had M.E. But God doesn't say that.
I'm sorry you feel worthless.
I'm not in your situation so I won't say "I know how you feel", but I do know that feeling.
We shouldn't dismiss our feelings and emotions, but at the same time, they may prevent us from seeing the truth. I lived by my feelings/emotions for years. If I was having a good day, it was "proof" God loved me, if things weren't do good, then he obviously didn't. I didn't understand why I had several debilitating allergies, while my non Christian brothers weren't affected at all. I was angry that God wouldn't take them away.
But I gradually realised that God didn't need to give me a "good day" to show me that he loved me - he had already done that by the cross. Jesus died for me, and for you, because God loved is so much that he wanted us to be his children. If we trust in Jesus and have his Holy Spirit, we belong to him, Romans 8:17 and nothing can ever separate us from his love, Romans 8:38-39.
I hope this doesn't come across as being too glib. I have no answers for your situation - except that I believe that you were made in the image of God and it is the devil who has tried/is trying to change that.
He will never be able to because the Holy Spirit changes us into Jesus' image and likeness.