Biggest sci-fi illustration I've done + New Youtube channel?

[yazziixx]

Hey guys, so I spent almost 7 hours on this piece, I haven't drawn 2 characters with a background in the same painting before. I'm really happy with how this came out. But I'm wondering if you can give me more feedback as to how I could make this painting better in terms of value, color, and even perspective?

Also last month I started my own Youtube channel where I upload speed paint videos. This is the video of this illustration. I'd love to hear your opinions about it. Is it too fast, did you learn something from the video?
Speedpaint video: https://www.youtube.com/watch?v=RwEL9XKvBzk

[creartive]

quite nice so far ... to improve yourself, you could refine the proportions of your characters (I think the hands do not really fit) > using some real-life references for the pose and parts... to make it even more interesting, try to connect your chars more with background (one in front of the viewer and the other one coming from farther behind or more interacting with the surrounding)... Keep it up!

[ragecandy]

Same thing with the proportions, I think the heads are a bit too big, which makes them look super young (not sure if that was the intention though).

Also I think the perspective of the building does look a little bit too forced, maybe making it taller, and pushing them back could help ( take that with a grain of salt cause I struggle a lot with that too orz)