It's very cute, but the heart is knitted and you have a crochet hook. It should either be knitting needles or change the patterning in the heart to something that looks like crochet.
Eta: I'm really not trying to dump on your design. It's adorable. Just saying someone who knits and/or crotches would notice.
Giving my clients what they want is very important to my work. Grandma was quite the avid crocheter, but the artwork I drew up using the center... Stitched(?) Crochet work had a rather unfortunate resemblance to a butthole. Tattoos are permanent and memorial tattoos are very personal - it's more important to make them attractive and meaningful than factually correct. I would hate to have someone mention something like "hey that looks like a butthole!" thinking they were being funny and cause a client to feel embarrassed or upset about their work. It is hurtful to both their self image and their memories of the person they got the tattoo for.