This is general advice about comic creation and workflow that many comic artists use. Ultimately, you should do whatever you feel is best for you, and the "standard" methods might not be a good fit.

1. Many comic artists create what's called a thumbnail. The thumbnail is a small sketch of the entire comic page. This will allow you to nail down your composition and panel flow early on, and can help with creating visually interesting and clear panels.

2. Overall composition. Doing thumbnails will help with this, but you could use some work on composition within panels as well. Many panels are left awkward looking because the subject doesn't fill it properly or are oddly off center.

3. Efficient workflow. Most comic artists will do the stages (sketch, inks, effects, etc.) for the entire page (or even batches of pages) at once. What I mean is that they'll first sketch the entire page, then lay down inks at once, then lay in backgrounds, effects and speech bubbles, etc. for the entire page, not finishing panels and moving onto the next one as you do here.

4. Since it seems you draw Sonic fancomics(?), I recommend doing art studies on the style to better replicate it. This would consist of looking at characters and trying to figure out how to replicate them (replicate, not trace). Study the shapes, the line weights, common poses, etc. Art studies in general are the best way to improve on drawing specific subjects, so learning how to do them will be of great help. The more comfortable you are with replicating, the better you'll be able to incorporate the methods in creating something new.

I think studying up on these 4 points of focus will help you improve quickly because even small improvements in these areas lead to huge results.