I don't mean to be a dick, but do you have much experience in tattooing?
I'm not exactly an educated party either, but some of these look a bit too fiddly to work as tattoos; too many fine details don't usually work too well in tattooing. Mostly I'm thinking the concentric curves in the biohazard eye and the feather details on the girl on the bike. It looks fine as a drawing but if you're going for a tattoo look you might wanna simplify them a bit.
Speaking of the girl on the bike:
HOLY WOW.
The shading on the girl is really really good; you've obviously got a good eye for form. That stomach is damn near perfectly shaded.
The bike on the other hand kind of says "I am scared of drawing this"; the bit behind the seat and the very front are looking fine, but the middle part looks kinda.. lumpy. You should work some greater range of tone in; both some lighter parts and some darker, because it's looking kind of muddy there. I'm going to assume you didn't have clear reference for the bike? If you're unsure of something research the hell out of it. It can be pretty boring but it's also very necessary.
Edit:
GEE ZEEMORT YOU SHOULD LEARN TO READ
Didn't see you were actually doing this for a tattoo shop, so I'm sure if the detail thing's a problem you'll have already been told.
Just out of interest, are you gonna end up doing any tattooing, or are you just designing? Once I've got some shit out of the way I might be doing an apprenticeship in tattooing and piercing c:
I'm not exactly an educated party either, but some of these look a bit too fiddly to work as tattoos; too many fine details don't usually work too well in tattooing. Mostly I'm thinking the concentric curves in the biohazard eye and the feather details on the girl on the bike. It looks fine as a drawing but if you're going for a tattoo look you might wanna simplify them a bit.
Speaking of the girl on the bike:
HOLY WOW.
The shading on the girl is really really good; you've obviously got a good eye for form. That stomach is damn near perfectly shaded.
The bike on the other hand kind of says "I am scared of drawing this"; the bit behind the seat and the very front are looking fine, but the middle part looks kinda.. lumpy. You should work some greater range of tone in; both some lighter parts and some darker, because it's looking kind of muddy there. I'm going to assume you didn't have clear reference for the bike? If you're unsure of something research the hell out of it. It can be pretty boring but it's also very necessary.
Edit:
GEE ZEEMORT YOU SHOULD LEARN TO READ
Didn't see you were actually doing this for a tattoo shop, so I'm sure if the detail thing's a problem you'll have already been told.
Just out of interest, are you gonna end up doing any tattooing, or are you just designing? Once I've got some shit out of the way I might be doing an apprenticeship in tattooing and piercing c: