Don’t be afraid. We all started from knowing nothing, with practice we improve. Advice: is be patient with yourself, feel ok when you make mistakes, it means you are growing. Ask for help, experienced people love to share what they have learned., The most important advice I could give you is constantly push yourself forward, don’t stay still. Practice. To start get in the habit of sketching the world around you. Big and small. Your environment is a fascinating place. Hope this helps.