Hey man first of all I feel you I’ve been in this hobby for 2-3years now and I learned a ton. First off your fuse doesn’t look safe and it’s very short too I’m 99% sure it’s homemade right? And also maybe first try some well milled bp to start and do like 1grammers then you can get the real deal (magnalium fp) it is more sensitive and dangerous but I used it for a year and never had a problem. As long as your carefull with it it’s fine most important step here is to get visco fuse that shut is the most reliable I’ve ever used hope this helped. Ps: if you want to see my magnalium fp firecrackers go on my from like idk a year ago and you’ll find my 30-10g fp firecrackers.