I've been playing for about 3 years now, switched from guitar so I could start playing with people; was playing with a band within weeks of first picking up the bass. Am now in a metal band who'd been around for years, really helped boost my progression. Now I've come to the point where I don't really know what to practice anymore. I'm holding off on more theory stuff because I need to improve my technique and chops (more on that in a bit). There are some of our songs I've noticed I can't play the faster parts cleanly, and even my own song my technique breaks down halfway through because there's a lot of stuff going on in the first register and my hand begins cramping up quickly, even if I'd been practicing it at home slowly focusing on relaxing my hands. Currently what I do for practice is set a metronome at like 60-80 BPM and do 16th notes to practice making my 3-finger technique more clean. Sometimes I'll just do straight 16ths on the 5th fret moving up a string every beat, sometimes I'll go 5-7-6-8 (on 1, 2, 3, and 4 respectively, but still 16ths) and move up and down the strings every 4 beats. But its typically just doing that exercise at a BPM for 5 minutes, take a break to run through a song that I know [Death - Spirit Crusher since I'm in D standard or I'll try other songs that are in standard (Megadeth, Iron Maiden) with the volume down], then do it again for 5 minutes with a 5-10 raise in BPM if I'm comfortable, either run through another song or take a minute break, and repeat. Do this for an hour. Then the next hour or so is practicing riffs, often the riff of mine that cramps my left hand severely, at a slow BPM (about 70) in 5-10 minute bursts. What I'm basically aiming to do is develop my chops. I'm tired of feeling like I'm playing sloppily. I want to be able to play the fast poopie I need to play up to seed and cleanly with no muffled or straight up missed notes. Its beginning to frustrate me playing shows with the other bands and having people come up to me saying I sound awesome and this and that when I know that I sound relatively sub-par compared to a couple other bassists in our scene, especially when one of them plays more technical stuff than us, which doesn't bother me I just want those chops of his, I want to be confident and be able to rely on myself. So yeah, I'm looking to improve my technique and chops but I'm not a 100% sure what I'm even supposed to be practicing to achieve that anymore. Problems I've noticed are left hand endurance (my left hand gets stiff relatively quickly when doing faster stuff in lower registers (say triplets at 120-130 BPM) even if I try to concentrate on relaxing my hand. I don't even feel like I press particularly hard on the frets. Perhaps my thumb positioning can be a bit off at times since there's a lot of changing positions and tilting my wrist out/in to access the higher strings and such, but I just don't know anymore. If I remember correctly, even practicing my riff at slow speeds and concentrating on relaxation and thumb placement, I still begin to cramp up from in thumb/between my thumb and index finger. I'd practiced every day last week and when band practice came around I felt exactly where I was at before. All the confidence I'd gotten while practicing alone was gone, all the same sloppy sorts of mistakes and flubbed notes, left hand endurance issues. Maybe this is from practicing at home sitting down versus standing at band practice and my left hand is in a different position because it not only needs to do fretwork but hold up the bass so the neck doesn't turn parallel to the ground like it wants to. My right hand attack is also slightly different as well probably from slightly different positioning from sitting vs standing. Ugh, I don't know. But yeah, if anybody has advice or exercises they can show me to improve my technique and achieve Cannibal Corpse level chops I'd appreciate it immensely. PS. Part of it might be my gear (or lack thereof, they've got a full-stack with an Ampeg head from like the 70s that sounds like garbage and its voltage is whack, and an old cab as well. Playing a 5-string Ibanez soundgear that is also theirs because its better than what I've got and more comfortable. So I can understand how playing on worn gear can make me sound less clear than I want, but I'm not sure how much of the issue is just my own chops and how much is me doing okay but still sounding like garbage because of that amp. Dream bass is a Spector Euro 5-lx with a newer Ampeg head. Would obviously work wonders in making me sound clearer but like I said, for me I don't know where to draw the line on how much of each of these factors is contributing to my frustration.