What I do with my drawings is make an outline and coloring it in online, but when I uploaded this, I noticed a lot of mistakes I made. :/ I misshaped the head, which I was able to somewhat fix on MSPaint, and I made one arm longer than the other, which I can't seem to get right.
I don't know if I should color this anyways or if I should redraw this.
Any opinions?

It's all up to you.
It looks nice. A good start.

Here's some things on proportions that help me:

- Some common proportional relationships for humans in European art are:
-- The average adult human figure is about 7 to 7.5 heads tall.
- The idealized human figure is traditionally[who?] represented as being 8 heads tall:
-- From the top of the head to the chin
-- from previous position to the nipples
-- from previous position to the navel
-- from previous position to the crotch
-- from previous position to mid-thigh
-- from previous position to just below the knees
-- from previous position to the middle of the shinbone (the tibia)
-- from previous position to the feet
-- The arms' wingspan (measured from the tips of the middle fingers) is exactly 1.07 times the body height.