hi! being a beginner artist myself who's also gone through character study, already you've done a good job at capturing the key features of these two characters. What I see that you can improve on is your line confidence, it's completely dependent on whether scratchy lines are a part of your style or not but if it isn't I recommend looking at the many tutorials out there to improve line confidence if that's a struggle you have! Now, depending on what your goal is through character study here's two tips I've used myself that you might find useful!
when it comes to proportions try breaking each part into simple shapes: the face an oval or square, the nose a triangle, eyes diamonds, and how they fit together. This way when you're drawing a character you can do a light sketch to figure out the proportions before you go on to drawing the features. I notice how for your second drawing you wrote "face wrong," this tip might be worth testing out and doing a comparison to your drawing here to see if there was any improvement or not.
Second, both the characters you've used here are from animated films and typically they use exaggerative expressions/poses you don't often see in realism/live-action. If you're ever looking to improve on understanding how character's emotions are displayed you'll find they tend to be a little more exaggerative! I'd recommend practicing emotions like overjoyed! or shock to really understand how each detail comes into play like a slight wrinkle at the corner of the eye and quirk of the mouth, taking such details into consideration can more often that not they make your art feel more lively!
Hope I didn't mouth off too much, but keep up the good work!
when it comes to proportions try breaking each part into simple shapes: the face an oval or square, the nose a triangle, eyes diamonds, and how they fit together. This way when you're drawing a character you can do a light sketch to figure out the proportions before you go on to drawing the features. I notice how for your second drawing you wrote "face wrong," this tip might be worth testing out and doing a comparison to your drawing here to see if there was any improvement or not.
Second, both the characters you've used here are from animated films and typically they use exaggerative expressions/poses you don't often see in realism/live-action. If you're ever looking to improve on understanding how character's emotions are displayed you'll find they tend to be a little more exaggerative! I'd recommend practicing emotions like overjoyed! or shock to really understand how each detail comes into play like a slight wrinkle at the corner of the eye and quirk of the mouth, taking such details into consideration can more often that not they make your art feel more lively!
Hope I didn't mouth off too much, but keep up the good work!