@supete Hi Pete, and welcome to the community! I completely understand not wanting to show other people your art and abilities, but like you, I realized if I never get any feedback, how do I improve? Congratulations for taking that step. The community here is fantastic.
I see your exercise on the submission page, and I’m slowly working my way towards it, so I’ll leave a detailed critique there soon. One thing I can say now is draw a little bit every day; it’s about gradual progress, not a sprint. Doesn’t have to be long, maybe 10-20 minutes, just keep drawing. You got this.
Welcome again, and I look forward to future updates!