Only the Liquitex Clear Gesso has the right grit to work with pastel. I'm sure there are one or two others, but this one is CLEAR. Regular gessos are rather smooth and not very suitable for watercolor. You need to find the right one for that.
It can't hurt to try the NFTs but I haven't had much luck with them, so don't expect too much. There is simply too much amazing competition ;-) Check your account on HiveEngine: You may already have enough tokens to sell for a few Swap.Hive on the NFT Showroom!
https://hive-engine.com/
However I think you're better off just posting your art slow and steady until you build a loyal following. It takes time; Hive is a marathon, not a sprint. Look at some artists here, they can pretty much write their own check just by publishing in OnChainArt. And if you look at their accounts, you'll find this didn't happen overnight :-)
Thanks for your help! As I see it, people here are very helpful and happy to share their knowledge. In Hungary, especially among professional artists, this is unfortunately not typical, they are jealous of their secrets and often do not value each other's work. I don't want to be one of those people. The atmosphere is different in the company of amateur artists, but there is even a lack of constructive criticism and praise for shoddy works. For N F T (and whatever), I think the most important thing is a good idea, which can be either funny or astonishing, related to the problems of the world, etc. I find that my natural watercolor stuff (for example birds, flowers), which I often work on for days, doesn’t hit the stimulus threshold, but some of my abstract scribbles do it.
Yes, that's possible. You won't know until you try it. Just don't waste a lot of money minting 100 NFTs just to get stuck. Try it slowly. Good luck!