Actually, the idea is, buying the Digital copy comes with the Original Painting or vice versa. Since I come up with a plan to do it via NFT for easy to share Sir.
If anyone can help me here sir on how to deal with it. It will be my pleasure.
I have around 10 Paintings and can be post in NFT as a collection. All with its original paintings as well as detailed material used and sizes.
Thank you Sir Pmalek. Godbless
Follow my advice above so that you can sell it with greater premium. Its true that you can sell it easier via NFT but you can't sell it with a high premium price because no one will be interested for that on higher price. Focus on your goal here. You are selling your paintings to cover the expenses for your grandma hospitalization bill. You can only achieve that by selling it with high premium through fund raising. I saw a lot this selling for a cause in collectible section. Bitcointalk Community is very generous on things like this. Approach trusted member on collectible section and let them organized it for you. Just make sure that you have proof to back up your story.
I love my grandmother too and she already passed away few years ago due to fckin cancer that's why I really want to help you mate by suggesting a method that I know which will work.