Tools That u will need You Will Need:
Macromedia Flash/Adobe Flash
A Brain
A Lappy
Patience

.
Download Flash Here : DOWNLOAD LINK
I'll Try my Best to tutor You All With Images.
I'm Using Macromedia Flash 8 as It's the only Cracked Version i googled. o_o
I'm Only Gona Do a Simple Basic Thing .
Teaching You How to make a Character Move Animation . xD
I'm to lazy For flying Weapons. Blood Effect.
1st Thing 1st.
Open Bannedstory Save Anything as Sprite.
You can Save the Background too if you want .
I'm From Bootes And thats my Char :X
Say Hai To her When u Saw her

Wondering Around Maple :X

Then Open Flash ,
And Select Create New ''Flash Document''
For Those Who Don't Know How Flash Look Likes ,
Its Like This


Ok
If You want to Resize your images ,
Go Click through Properties Den Click Size : ''WHATEVER SHYT''

Now, Lets Say i wan To Change the Size Width To 270px
And Height to 150 px

Ok , Macromedia Flash Also Have Layers Same Like Photoshop

Here u can See the Layer Panel .

Layer 1 - You Can Use it As Background.
Layer 2 - You can Use it As Your Cloud if u want . ( I'm to lazy to do this. Its The Same as Your Char Moving. )
Layer 3 - Use it For Your Tiles/Floors.
Layer 4 - It Can be Use For Your Character
Layer 5 - Can be use For Any Props Like , Blood Effect, Fly Weapon.(Optional) I'm Not gona Do tat Cause I'm too lazy

Im only using 3 Layers Total.
Click Layer 1 and Add Background By Dragging it From Your Folder Too The Flash .
Layer 2 Insert The Tiles

Then in Layer 3 Drag Your ''Walk Char'' into it
Your 1st Walk. DON'T Touch anything Yet . Dont MOVE Your Char,
(TIPS : Drag it into the Frames Box if not u will open a new Document)
Now Right Click Your Char And Click ''Convert To Symbols''

Tick the ''Graphic'' Part And Then Click OK.

After That , Double Click Your Character And it Will Turn Out To Become Liddat .

Total There is 4 in the Animation ''Walk'' .
Now We Have to Deal with the Frames .
(TIPS : 12 FRAMES [FPS] = 1 Second .
Click F6 To Add Keyframes.)
Add in 4 Frames Because There is 4 Walk Frames

Just Follow What is in the Picture .

Then Delete Those Black colour thing.
Click it and press Del Button on your keyboard

Click Frame 5 And Add the 2nd Walking Pic .
Same Thing Insert it At the Frames if not u will open new Document,

Same Thing Repeat It Again. Click Frame 9 and Drag the 3rd Walking Picture .

Same thing Again Repeat it. This time its at Frame 13 .

Now Ure Done with the walking.
Click on the Background it Should Return as per normal .
Now How many Seconds Do i want This Animation to be?
Remb! 12 FPS = 1 Sec !!
Let Say i wan it to be 30 FPS.
Highlight it And Right Click insert Frames

Now Place Your Character Where u want it to be on the 1st Frame.

And At the Last of the Frame Where u want it to be too

The Last Frame Insert Keyframe BY Pressing F6.

Now, Highlight the Whole Layer 3
Right Click --> Then Click ''Create Motion Tween''

Then it's Done .
You can View it By Clicking Control at the TOP.
And Click Play How its look Like.
Now Highlight the Whole Thing and Export it ''EXPORT MOVIE''
Save As Animation GIF.

Then Click Match Screen and Click OK.
POOOF AND ITS DONE!!!!!!!!!!!!

It Should Look Like This .

Credits :
Me For Guiding it. And for Being Bored. xD
Mozzila Firefox For Web browser o_o
Macromedia Flash

Paint for The Print Screen.
If Your Totally Lost PM Me.