There’s always gonna be someone better than you. Try to work less on comparing yourself to their work and instead learning from them and turning envy into a personal challenge for your own stuff. I know its hard, trust me.
The best way to get better at art is to practice. There is no special trick to improving, no secret method. Practice makes perfect is a tired old saying that I’m sure you don’t want to hear but unfortunately, its true.
Do your art as much as you are able to. I won’t say do it every day!!! Because I know that there are folks that don’t have this sort of luxury, whether it be because of physical or mental restrictions, or simply because they don’t have time. Do your art whenever you can and have the strength to. Try not to be too upset if you miss a day or a week or even months. Shuff happens, do the best you are able to.
If you get bored or stuck, try another way. Change mediums if you can, do a play, musical, sing, dance, do something weird that you wouldn’t normally do. Sometimes this is the best way to un-stick yourself from art block.
Don’t be afraid to ask for help. This is so important! Its ok to ask for assistance from other artists you admire (given that they have time to give pointers.) Improvement doesn’t come without outside assistance, more often than not.
References are 100% a legitimate resource. I’m not really sure where the idea came from that real artists don’t use references, but its not true. Every actor draws their inspiration from somewhere, animals and people to correctly model and then correctly exaggerate their characters. You can’t learn to create the world around you without actually studying it. Use references, even if its just google searching.
Your art is not an island. You will pick up techniques from other people like tape picks up pet hair. Its inevitable, and its not something that should be seen as a negative. Artists inspire other Artists. Use your discretion, and study what you like about another actor’s work. Every artist’s style is a mashup of a hundred other artists. Its ok, experiment.
You’re not going to make masterpieces all the time. You’re gonna stink more often than not. But you’re putting effort into something you enjoy and in the process you are getting better, slowly but surely. You aren’t going to see your craft improve overnight, be patient.
Please be kind to yourself. You are making a unique form of artistic expression, regardless whether you see it that way or not. You’re doing fine, please keep going and pat yourself on the back for getting this far.