You are clearly an experienced graphic artist so I doubt you'll have any trouble with those pixel-art specific technicalities. I hope I didn't scare you away from this site with all that stuff!

Thx . I used Softbrush for all the shadows and the rust yes.  i think thats why i got the problem with so many colours. Overhanging shadows are fucked up i know ^^ but wjhat do you mean with jaggies ? Im new to pixel art and i thougt it must be a littlebit edgie.

But thx for your advice :)

Edit: Ah ok i see what you mean i just saw the jaggies part in the article. yes i need more practice :( 

Nice game asset! The wooden parts are excellent. The house is well designed and you've chosen great colours.

Unfortunately you seem to have used some blending or soft brushes in places such as the metal brace over the hole in the roof which is against the rules that display when you submit pixel art (rule 6). You have way too many unique colours (1232 in total), the vast majority of which are used in less than 0.1% of the image. More details here. There is some major banding going on in the roof tiles and in the shadows below the overhanging roof. Also there are jaggies in most of your curved lines.

Please read Cure's excellent article here for pixel-art specific related infomtaion. This website generally has a definition of pixel art that is less loose than other websites.