In this tutorial, you have a chance to learn how to create a realistic water effect in flash using the mask and some special flash tips and tricks. To create this lesson, you don't have to use A.S.code. You will also learn how to create water shape, how to animate it, convert it into a Movie Clip Symbol and more!
Example: Step 1
Create a new flash document and set frame rate to 13 fps (Frames per Second).
Step 2
Import any picture in flash (Ctrl+R), on which you want to apply the water effect.
Step 3
While your picture is still selected, press F8 key (Convert to Symbol) to convert it into a Movie Clip.
Step 4
Double click on a new made Movie Clip (picture) or choose right click and Edit in Place.
Step 5
While your picture is still selected, press F8 key to Convert it into a Graphic symbol.

After that, double click on layer1 to rename its name in mianPicture. Then, click on frame 1, choose right click and Copy Frames.
Step 6Insert a new layer and name it picture. Click on frame 1 and choose right click and Paste Frames.
Step 7Insert a new layer again, and name it waterEffect.
Step 8Take the Rectangle Tool (R), Stroke color must be switched off, under Fill color choose any color and draw a "rectangle" over the picture. Then, take the Selection Tool (V), and do like it is shown on the picture below.

Finally, you'll need to get this:
Step 9Click on frame 10, 20 and 30 of layer waterEffect and press F6 (Keyframe).
Step 10Go back on frame 10, and using the arrows key on the keyboard, move the "effect" a little down. After that click on frame 30, and move the "effect" a little up.
Step 11Select the waterEffect layer, and in Properties Panel under Tween choose Shape.
Step 12Select waterEffect layer and convert it to a mask by right-clicking on the waterEffect layer and selecting Mask.

Step 13Click on frame 30 of layer picture and main_picture and press F5 on the keyboard.

Test your Movie (Ctrl+Enter).
We're done!
Download source file (.fla)