No such thing, you must draw all angles...one pixel at a time 

I kept the tiles the same width and drew some angles.
But I have difficulties working with them.
How do I draw a tree on it, or a sprite, etc...

I'm just going to use javascript to load picture after picture.

My two cents:

It can work if you select ONLY 4
(or another maximum, better be small :) )
view points.

The 4 viewpoints that you have shown
could work. There are 'only' 4 vertical rotations
that you would be handling.

Whatever amount of tiles you select,
there will be lots of work. But people
already told you that, and if you are
still want to try I would suggest to
use a 3d program. No, no don't go
away. Use a 3d program to show you
what happens to spheres interacting
and rectangles, triangles etc.
Study all four view points with these
objects. Watch how the perspective
is different. Then combine some of
them. Why not a rectangular with
a circle on top. It could be a start
of a tree and maybe even a character.

After you have studied the different
positions you can work from there.
Use them as a reference together
with looking (or maybe making your own)
reference pictures with that angle.
Start simple because you will find it
hard.

Please, please share some of these
experiments, in for example the WIP
section as Jalonso has suggested, since
I am really looking forward to some of
this work!

Best regards from

M.E.