When it comes to Art it may be a little harder. You may feel cautious about ruining things or wasting materials. Ok first and foremost, practice material. Whether it be cheap canvas, crayons rather than paints, old clothes whatever. Always set yourself up with materials that you can practice on.
One of my 9,600,253.2 hobbies happens to be Fabric Painting and decorating. Not fru fru because I can't get there in my head yet LOL but just changing things up or giving them more character. And I've even made some slip ups on some expensive item but it's Art. There are not mistakes, only reasons to get a little more creative.
This semi murky mess was me playing with various types of Fabric and Textile paints and stencils and masks. Even though it was a play piece I used every paint I could get my hands on. It was a lot of work and a lot of paint. LOL. But the colors were keeping me motivated.
Sometimes it's what you do...not how you do it!
Well it's not the prettiest thing in the world and definitely not my best LOL but it's kind of an Inspirational piece for me now. It's visible so I can look, laugh, remember and create. And that's a good way to work out your Artistic frustration.
If I focus on that thing for just a couple of minutes I'm off on another Creating Adventure!
And of course, practice pieces are good for when you attempt things like painting on expensive clothes as I did on this 100% Linen Jacket.
Sometimes all you have to do is throw some color on it! For Real! Now would I steer you wrong? :-)
In the instance of creating Art...it's ok to look past the Big Picture. :-)
Do It In Color Today! :-)