diff --git a/readme.txt b/readme.txt
index 75700a7..2c6d640 100644
--- a/readme.txt
+++ b/readme.txt
@@ -8,3 +8,9 @@ Usage: sillyimage <input image> <output image>
 
 first and second 4 byte is image width and height.
 the rest is raw argb15, no fancy compression or anything, just a simple raw data...
+
+TODO:
+- limit image dimension...using uint32 is like using a rocket launcher to swat a fly—why on earth i need an image that big?!
+- error handling dont just assume everything will go perfectly! be ready for the unexpected!
+- quantize color using predefined palette
+- do compression, do i really need that?
\ No newline at end of file