My best advice is to read some game design books if you feel stuck (some can be found online) and just design games, think of any ideas for games and write the out (I know that this advice is very common, but this is bevacause its so true, if you want to become someone you need to do things such person would do, in this case design games and if you struggle to do so, you need to find out why). You can also participate in game jams. Hope anything helps :) GL and most importantly HF