I don't think you can answer me this,but I feel like I should share this, after experimenting a bit, I noticed that the problem comes from saving the maps files, for some reason when I save it, even if I save it without any change they will cause the rebuild to fail. It never happened to me, even I have made a hack with him you see, as a test I tried to import a megaman 8-bit sprite as sonic's standing sprite, how ever that sprites requires 3x3 tiles and not the usual 3x5 tiles, so Idid what he said and got rid of all the tiles that doesn't touch the sprite and and made a new sprite and all of those stuff, and megaman seemd to have been imported correctly, I put him instead of the sonic standing sprite and then simply saved everything, but I yet can't rebuild the rom, and in the error text file there is a list of all the other sprites names, so what ever I did must have affected those as well now part 1 worked fine for me, but I was more interested in part 2 which didn't worked out as expected. I tried to do everything the guy said and I can't rebuild the file due to errors.I know the guy said ' you fucked up, now go read everything over again' and I did, and it should work, through there is one thing I did which I am questioning. Ok, I wen't through the whole tutorial, both parts, and I learned a lot about the program and how to use it. You need the Sonic 1 disassembly, I recommend the GitHub version, you can download on Sonic Retro, just search on Google anyways if you have expirience with this and know how to use it and sugest me what I should do, then you're welcome to help. I also want to mention I tried to use tile layer pro, and I really don't know how to use it when it comes to sonic, sonic just has so many tiles, and the different color palate the program gives me doesn't help me recognize them, I just don't know what to do, Edited Novemby Baraksha I know the program sonik sprites and I tried it, drawing on the sprites works, but for some reason I don't get a lot of colors to work with, acording to the description of the program on sonic retro it can also import picture, but I don't know how to do that there, it has to do with scripting. I recently decided that I want to learn more about how to make my own rom hacks. I always imagined it would be not to hard since there are a lot of sonic rom hacks that had to do with changing the chatacter sprites, but I guess I didn't know what I was going in to. my problem is that I don't want to simply drew on sonic's sprites, I want to replace them with pictures I have. you know, something like this. I'm not sure if this subject is related here, if it isn't then please place it where it belongs or sugest me a different

Sonic 1 part 1 sprites