It's really cool that you're challenging yourself! I think you did really good on the expressions and faces. If you want two characters to look like they exist in the same space you need to make sure they're in the same perspective. I'm not sure if you plotted a perspective grid, but it doesn't look like you were following one. This is most obvious with the girl. Her upper body looks like the horizon line is very high, but her lower body makes it look like it should be really low. Remember that you will be able to see the BOTTOM of objects when they're ABOVE the horizon line and that you should see the TOP of objects BELOW the horizon line. So make sure you always know where your horizon line is. I decided to place the horizon line high up which meant I had to change a lot of the angles of things. This is because every object has it's own vanishing point or multiple vanishing points! This means that the angles/sides of an object should all converge to a point or 2 points on the horizon line. There is an infinite number of vanishing points and every object can either have their own vanishing point or share one (or both) with another object. So practice making sure all your planes are consistent with whether or not you are looking at it above or below the horizon line. This can be done by plotting down your horizon line and then drawing a box whose sides converge on the vanishing point and then using that as a guide to construct your character. Eye level/Horizon line is the most important thing to make characters look like they exist in the same space! This was helpful for me and something that I learned from kim jung gi and if you're interested these are some of his lectures posted by someone named Mike Bop on youtube - Importance of Eye Level in Anatomy & Buildings Art Lesson (From Kim Jung Gi) - Drawing from Eye Level & Controlling Proportions Art Lesson (From Kim Jung Gi) - Cats, People and Objects with Proportion Art Lesson (From Kim Jung Gi) Hope this helps! | Artwod Feedback